Blip: Peer-to-peer massive file sharing

(blip.net)

145 points | by miles 17 hours ago

21 comments

  • tomazsh 14 hours ago
    Hey! Blip co-founder here. We didn't expect to show up on HN, but really grateful to OP for sharing Blip. Here's a little bit more about it.

    We've built Blip because it's still hard to send original quality photos, videos, and large files to your devices and to other people on the internet. We’re designers and engineers, so our goal has always been to keep the product super simple on the surface, but really fast and powerful underneath.

    Blip works in a peer-to-peer way at the UI level: you pick the device or person, and Blip takes care of the delivery. Transfers go directly over WAN whenever possible, and fall back to relays when needed. The idea is to send in one click, skipping the usual dance of moving files through cloud drives and managing shared links.

    Under the hood, Blip is optimized for large media and data transfers. It supports full-speed acceleration, resumable progress, and we're rolling out E2EE across all clients to ensure sensitive business data remains secure. Many creative pros and teams already use Blip in their daily media workflows.

    We don’t monetize data because it doesn't align with the values of our creative and technical users. Instead, we run on a simple donation and subscription model that lets you support the product and use it without limits, quotas, and frustrations. Our goal is to make file transfer feel invisible.

    Happy to answer any questions.

    • pizzathyme 14 hours ago
      Looks amazing! Maybe a dumb question: why isn't Dropbox doing this? Why did you all need to leave to make this a reality?
      • tomazsh 13 hours ago
        Thank you, and great question. In my experience, big companies have way more strategic priorities than two guys who just want to build something useful. We didn't leave to build exactly this, but a few things came together organically from past projects, including our work at Dropbox.
    • NautilusWave 9 hours ago
      What's the timeline on rolling out E2EE? Is it for paid users only?
      • tomazsh 5 hours ago
        Gold standard on all plans. Already supported for transfers between iOS and Mac devices. Android and Windows coming soon.
    • mempko 14 hours ago
      Linux support please!
  • Saris 17 hours ago
    Interesting that it says "Internet sending may be slower during peak times to keep things fair" even though it's supposed to be P2P?

    Maybe they just mean if you end up with a relayed connection due to NAT issues? Because lower down it says "Send as fast as your connection"

    • tantalor 16 hours ago
      > When a direct connection isn’t possible, files travel through our servers.
      • Saris 14 hours ago
        I figured, it's just explained in an odd way.
      • bilbo0s 16 hours ago
        That's what actually made it a hard pass for me.
        • SquirrelOnFire 16 hours ago
          Why's that, given that files are encrypted?
          • throwawayffffas 15 hours ago
            With whose key? I am not saying the service is not trust worthy, just that there is trust involved.

            Trust not only they are not malicious, but also they won't have some kind of vulnerability.

            Plus if it's encrypted how is the other party going to read the file? The key will have to take the same path.

            • Dylan16807 13 hours ago
              > Trust not only they are not malicious, but also they won't have some kind of vulnerability.

              Wouldn't that still be the case if relay servers didn't exist? A hacked version can send your file to the wrong person.

              • throwawayffffas 1 hour ago
                There is more attack surface with a server.

                The vulnerability doesn't even have to be in their software, but in any piece of software they use, ssh, nginx, etc.

            • actionfromafar 13 hours ago
              Hopefully it's a privpub negotiation. But yes, you have to trust the code.
    • tomazsh 14 hours ago
      That's right. We actively manage load across our relay network to ensure good performance, but we'll prioritize business transfers during peak times. We don't artificially limit the client, but P2P connection speeds can sometimes be affected by router configurations and ISP routing. For example, some ISPs route P2P traffic through slower paths, which can introduce variability.
  • ryandotsmith 17 hours ago
    Does anyone have an idea of how this is built? I wonder if they are using QUIC with relay servers or something like Tailscale's DERP.
    • iamcalledrob 14 hours ago
      It's something closer to Tailscale DERP.

      We evaluated QUIC (and many other approaches). Turns out it's a lot harder than you might think to move traffic at high speed across the world, over residential-grade internet, and not drain your battery.

    • realsdx 17 hours ago
      If it's truly p2p, some relay would be there in case the client cannot be reached through NAT. Not sure how they would bear the cost of the bandwidth for unlimited transfers in that case
      • wongarsu 16 hours ago
        Traffic is pretty cheap outside the big clouds. For example Hetzner charges $1/TB on a 10Gbit connection
    • 2color 12 hours ago
      I wouldn't be surprised if it's built with Iroh

      https://www.iroh.computer/

  • satvikpendem 16 hours ago
    I wonder what tech stack they're using, given it supports all the major platforms. I like sendme [0] which uses iroh, a peer-to-peer library as well.

    [0] https://github.com/n0-computer/sendme

  • poisonborz 17 hours ago
    Free open source alternative: https://pairdrop.net
    • dhruvmittal 16 hours ago
      Magic Wormhole [1] also exists.

      [1] https://magic-wormhole.readthedocs.io/en/latest/

      • ori_b 16 hours ago
        And for a web native version, there's also WebWormhole: https://webwormhole.com/
      • rickydroll 15 hours ago
        Syncthing [1] also exists

        [1] https://syncthing.net/

        • jjcob 15 hours ago
          Syncthing is for syncing folders like Dropbox

          It's not a good solution to send individual large files.

          • rickydroll 15 hours ago
            Syncing files is only one of its capabilities. It is best suited for use between two individuals/organizations that need to transfer files between themselves more than a few times. Its main advantage for me is that it doesn't require a central storage system, such as Dropbox, to hold the files. It's just you and me and a rendezvous server.

            In a previous life, I used Syncthing to transfer terabytes of files from the company I worked for to a third-party printer. It was delightfully reliable, and easy to set up.

            If it's a one-off, yeah, you're right that it's not wonderful. I've used Magic Wormhole successfully for that use case.

            • xeonmc 8 hours ago
              So it’s the GPG of file sharing?
      • jszymborski 14 hours ago
        Is there something like a Magic Wormhole server, so I can e.g host a file on my NAS (behind a NAT) for download long term?
      • ch71r22 16 hours ago
        also Keet: https://keet.io/
    • evantbyrne 15 hours ago
      There's also LocalSend, which I've found works the best for me personally and is a bit more polished than browser clients
    • jjcob 15 hours ago
      • snvzz 10 hours ago
        croc has the advantage of being well-established by now. Most package systems have it.
    • drexlspivey 16 hours ago
      I vibe coded this in one hour to send files to my work laptop. Static page + webRTC + short lived cloudflare durable object to make the handshake.

      https://send.drexl.dev/

    • seemaze 13 hours ago
      ..also FilePizza as a web service: https://github.com/kern/filepizza

      or tailscale's Taildrop as a native application: https://tailscale.com/kb/1106/taildrop

    • ishanjain28 16 hours ago
      Are you people seriously suggesting webrtc crap in response to a native app built for much much high speed transfers? Unbelievable
  • rahimnathwani 16 hours ago
    This looks awesome. For sending files between my phone (Android) and my son's iPad, I use:

    Android: Wormhole William (https://github.com/psanford/wormhole-william-mobile)

    iOS: Destiny (https://github.com/LeastAuthority/destiny)

    Some drawbacks to my current approach:

    1. Destiny needs to be configured to use the standard Magic Wormhole servers (just once, after installation): https://github.com/LeastAuthority/destiny/issues/259#issueco...

    2. Initiating a transfer requires out of band communication and some copy+paste.

  • miksak 17 hours ago
    I wonder how widely usable is file sharing nowadays when most of the non tech people just use cloud services for their data, be it google docs or some cloud photo storage
    • nrmitchi 16 hours ago
      Most non-tech people do not just use cloud services for their data.

      Really not sure where you got that from, but even if it was true, most non-tech people will still shy away from putting a 250G file in a cloud service once they get prompted to upgrade their plan because they don't have enough space.

      • thehappypm 15 hours ago
        Cloud is kinda the default now. Most Americans just take pictures with their iPhones and it ends up in icloud.
        • throwawayffffas 15 hours ago
          That's different from getting a Dropbox account or manually uploading stuff to Google drive in order to share it with someone.
          • tomazsh 13 hours ago
            Right. We don't provide storage. Blip is designed to be the fastest way to send things to your devices and to other people in real time, without waiting for uploads, sync, or managing shared links.
          • crazygringo 13 hours ago
            The point is your stuff is in there already. You just click share and send somebody a link.
      • crazygringo 13 hours ago
        I dunno, seems like most do? Their stuff is in Google Photos, Google Docs, iCloud Drive, etc. And yes they pay for the space once their photos or phone backups get big enough.

        And I don't know any non-tech people who have any 250GB files. The only people I know with those shoot 4K video professionally. Or scientists running truly massive simulations.

    • supportengineer 16 hours ago
      Non-tech people couldn't tell you what a "file" is.
      • ryandrake 16 hours ago
        I think non-tech people used to be able to, but tech companies have been on a 10+ year long crusade against the concept of a "file" and where that file is "stored" and trying to blur once-sharp lines so that people forget. Tech really wants you to think of your data as an amorphous blob vaguely "in their app" and not worry about crisp delineations like files, whose hard drive those files are on, and whose machine that hard drive is in.
  • packetlost 13 hours ago
    I'd be more inclined to use this if it were open source. Oh well.
  • leosanchez 16 hours ago
    Android app looks beautiful. Waiting for the Linux version.
    • tomazsh 5 hours ago
      Thanks. We put a lot of work into our apps.
  • greener_grass 17 hours ago
    Is this AirDrop but cross-platform?
    • FabHK 16 hours ago
      Addressed in the FAQ:

      > How is Blip different to nearby sharing like AirDrop? Apple’s “AirDrop” and Google’s “Nearby Share” can be really handy. However, they aren’t compatible with each other and require devices to be physically next to each other. They are also unreliable when transferring large files, and will often lose your progress.

      > Blip doesn’t need devices to be nearby, so it’s much more reliable. Blip works wherever your internet connected devices are in the world, and works regardless of what kind of device you own. You can transfer from Android to Mac, Windows to iPhone, iPad to Android—you name it!

    • kjksf 16 hours ago
      No.

      AirDrop is for people who are physically nearby.

      This allows to send files between any computers anywhere.

      The other person must be a known contact but it doesn't have to be on the same local network like in AirDrop.

  • abcd_f 17 hours ago
    This is a minor OCD nitpick, but

    > at super fast speeds

    Fast speeds aren't a thing, just like cheap prices and wet waters aren't.

    • therealdrag0 16 hours ago
      I don’t follow. Speed and price can be many values, high or low. It’s perfectly valid to add an adjective describing it as fast or cheap.
      • abcd_f 16 hours ago
        Cheap means "low in price", so "cheap price" makes no sense.

        Fast means "of a high speed", so it's the same here.

    • Tokumei-no-hito 16 hours ago
      nit-nit, what's wrong with cheap prices? price doesnt infer magnitude.
      • abcd_f 16 hours ago
        Cheap means "low in price". Price can't be "low in price", it can be just "low".
        • gnabgib 16 hours ago
          Cheap has many more meanings than that. It can mean comparatively inexpensive (a cheap Lamborghini), of inferior quality (cheap paperclip), miserly (he's too cheap to buy better), gained with little effort (cheap win).
          • FabHK 16 hours ago
            So what's a cheap price? A price of inferior quality? A miserly price? A price obtained with little effort? Or is after all a low price what's meant?
          • abcd_f 16 hours ago
            Sure. Still doesn't make "cheap price" a valid combo.
    • Foivos 16 hours ago
      Somehow it has to be contrasted with ``slow'' speeds.
      • abcd_f 16 hours ago
        "High speeds"
    • readthenotes1 16 hours ago
      That's a quality nit pick for sure.

      J/k

      It's a high quality nit pick imo:)

  • system2 16 hours ago
    Who else needs to share files bigger than 1 TB? Most cloud services, such as Google Drive or OneDrive, are more than sufficient for managing massive files. I don't see the appeal of this new service.
    • yjftsjthsd-h 15 hours ago
      Oddly enough, I would argue the exact opposite direction; really big files are exactly where I want to do a direct p2p transfer without paying to store it in the cloud.
    • unquietwiki 14 hours ago
      Google Drive throttles uploads over 5GB, and not everyone has a storage plan that could fit that.
    • supertrope 16 hours ago
      It would save you the time to upload first, effectively halving the time required.
  • manoji 14 hours ago
    Surprised syncthing isn't mentioned yet. It has been the most stable sync tool for me over the years https://syncthing.net/ . Solid product . Great oboarding experience for Blip! Its just working!
  • supportengineer 16 hours ago
    It's like YouSendIt!
  • ceronman 16 hours ago
    This looks really cool. I especially like the "Keep your progress, whatever happens" feature.

    The product looks polished and I definitely see myself using it. My only concern is: Are they taking VC money? Is this going to be enshittified to death trying to pursue a 1000x investment return?

  • landl0rd 16 hours ago
    No benchmark comparisons with Aspera or similar even though they compare pricing? Because my gut instinct is it's probably a good bit slower.
    • tomazsh 14 hours ago
      That's not what our professional customers are telling us :) Good point about adding benchmarks to our website though.
      • landl0rd 12 hours ago
        That's awesome man, I'm glad to hear there's a viable competitor. Gl and I look forward to seeing it.
  • timc3 16 hours ago
    Don't see any mention of an API.
    • tomazsh 14 hours ago
      We don't have the API yet, but are exploring use cases for it. Send me an email at tomaz@blip.net -- would love to chat.
  • api 17 hours ago
    Wait... you're telling me it's 2025 and we can finally conveniently send files?
    • 42lux 16 hours ago
      Looks not really convenient...
  • lagniappe 17 hours ago
    I have a few qualms with this app:

    1. For a Linux user, you can already build such a system yourself quite trivially by getting an FTP account, mounting it locally with curlftpfs, and then using SVN or CVS on the mounted filesystem. From Windows or Mac, this FTP account could be accessed through built-in software.

    2. It doesn't actually replace a USB drive. Most people I know e-mail files to themselves or host them somewhere online to be able to perform presentations, but they still carry a USB drive in case there are connectivity problems. This does not solve the connectivity issue.

    3. It does not seem very "viral" or income-generating. I know this is premature at this point, but without charging users for the service, is it reasonable to expect to make money off of this?

    • jcalx 16 hours ago
      Context, for the above: https://news.ycombinator.com/item?id=9224

      It worked out the first time!

      • muppetman 15 hours ago
        Thanks for this - I thought the OP was insane...
    • bestouff 16 hours ago
      Hey isn't this the same famous reply as the one the Dropbox founder got here in HN ?
      • rising-sky 16 hours ago
        infamous*

        but yes, sure sounds like it!

    • pluto_modadic 14 hours ago
      1. - FTP could fail / doesn't resume the same way rsync, mutagen, or syncthing could

      2. - nothing would by your criteria of an airgap, that's a strawman, this is just an alternative over the wire method (as is bluetooth file transfer)

    • kvirani 16 hours ago
      Haha
    • tomazsh 14 hours ago
      Classic lore! :)
    • otterley 16 hours ago
      > you can already build such a system yourself quite trivially by getting an FTP account, mounting it locally with curlftpfs, and then using SVN or CVS on the mounted filesystem...

      I don't think the word "trivially" means what you think it means.

      [Edit: I now realize the above is a verbatim quote from a naysayer after the Dropbox announcement]

      • lynndotpy 16 hours ago
        Other comments have added context, but this is a Hacker News "copypasta" of sorts, from DropBox's first launch.
      • Dylan16807 13 hours ago
        > I don't think the word "trivially" means what you think it means.

        You cut off "for a linux user [in 2007]" and that's a very important part of the sentence.

    • rvz 16 hours ago
      The joke at hand. [0] Here we go again.

      Now let see if the founder(s) will reply here and to run it all back from start to IPO.

      What would the founders do differently from dhouston this time?

      [0] https://news.ycombinator.com/item?id=9224

    • kmeisthax 14 hours ago
      [dead]
  • markasoftware 16 hours ago
    "former dropbox engineers" doesn't mean a whole lot -- it's a large company where tens of thousands of people have worked over the years. It's not like this is by the founders or anything.
    • ryandrake 16 hours ago
      Yea, "former [COMPANY] employee" could mean anything. I'm not sure it's really much of a flex. I'm a former Apple employee. Nobody gives a shit, and nobody should--That doesn't count for anything if I were to do a software startup. It wouldn't even bear mentioning in a press release.
    • dang 14 hours ago
      Ok, we've taken the former dropbox engineers out of the title now.
  • mbrumlow 17 hours ago
    So airdrop…

    Not sure why this needs to be a service. Or why data needs to go through their servers.

    • givemeethekeys 17 hours ago
      It looks like this lets you share files with people using a different operating system than MacOS. Does AirDrop let you do that?
      • subarctic 16 hours ago
        His point is about it being a service vs just a peer to peer app
        • kjksf 16 hours ago
          So you run the app. The other person runs the app.

          How do those 2 programs find out about each other?

          Well, they need to use some server that will connect all users, allow you to find the other person in order to send them a file.

          Even BitTorrent needs tracker servers to connect downloaders to uploaders.

          Now, you could try to make it run without a company behind it, like BitTorrent.

          I guess it's an exercise for the reader.

          Someone still needs to run those connecting servers out of the goodness of their heart.

          You would need to degrade the usability (the first thing a user would need to do is to configure the app with the address of at least one connecting server).

          BitTorrent is anonymous but for sending files you need to connect to a person you know. If you enable contacting via the protocol, it'll be a phishing nightmare.

          So you'll have to degrade usability some more and use a side channel (e.g. an email) to exchange identities with people you want to send file to (or receive files from).

          By having a service and a company behind it, they are able to perfect the UX and run the necessary servers to implement that UX.

          • 42lux 16 hours ago
            Universities, the Debian Foundation, Nvidia, the ccc, hell even Microsoft run magic-wormhole relays... the only thing new here is the subscription and the hipster gui client.
            • givemeethekeys 16 hours ago
              This is classic critique. Dropbox was criticized in the same way when it was announced years ago.

              Magic Wormhole is cool (I just learned about it! Thanks! :)), but most people don't use nor care about the command line, and are probably afraid of it.

              • 42lux 15 hours ago
                I am more in critique of the shameless subscription for services like this. US$25 /user/month for what? Certainly not the traffic.
                • unquietwiki 14 hours ago
                  I think that might be billed on the sender vs the receiver. So if you're a solo creative person sharing stuff with clients, this can be one way of doing that. Also potentially useful for small businesses without an enterprise file sharing solution.
    • abcd_f 17 hours ago
      It appears that the data is relayed as a fallback, if there's no p2p connection possible. This is a classic transfer model for mediated transfers.
    • otterley 15 hours ago
      AirDrop only works on local networks, not over the Internet.