Dev tools · alternatives · 2026

24 alternatives to Seamside

Make things with your people, on your own devices. Shared spaces full of small apps, live for everyone at once. No cloud, no accounts, no tracking.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Fabric▲690

   Make notes, tasks, and search, directly from the terminal.

   2023 · fabric.so · its alternatives →

2. 2
   Spaces by Google▲555

   Small group sharing for everything in life

   2016 · workspace.google.com · its alternatives →

3. 3AS
   A self-hosted alternative to Trello, Basecamp, and Freshbooks▲396

   2016 · duetapp.com · its alternatives →

4. 4
   Serverless Cloud▲283

   Build full stack apps better and faster than everyone else

   2022 · serverless.com · its alternatives →

5. 5
   new.space for iOS▲350

   Sharing, Feedback & Planning Made Easy

   2024 · apps.apple.com · its alternatives →

6. 6
   Cospace▲76

   Free self-hosted collaboration tool for stress-free work

   2022 · twigex.com · its alternatives →

7. 7
   Portal▲181

   Hey HN, I'm Zach, founder of Portal. Portal lets you share a live sandbox browser session as a link. Try it here: https://www.makeportals.com/try Instead of asking someone to sign up, install software, or book a demo for user research, onboarding, or sales, you send a link and they interact with the real product in a sandboxed browser environment, then you get session replays. Each viewer gets a fresh remote browser instance that starts from a defined state (URL, cookies, extensions, local files, etc). Sessions are isolated and expire automatically. The sessions have…

   Feb 2026 · makeportals.com · its alternatives →

8. 8
   Mozilla Hub▲90

   Meet, share and collaborate in private 3D virtual spaces

   2022 · support.mozilla.org · its alternatives →

9. 9
   oVice▲94

   Create your virtual space swiftly and meet up closely

   2021 · ovice.com · its alternatives →

10. 10
    Solo 2.0▲142

    Personal kanban boards hosted on your own server

    2016 · getsoloapp.com · its alternatives →

11. 11
    Napkin – Build back-end functions in the browser▲158

    Create and deploy serverless cloud functions instantly, all from the browser.

    2021 · napkin.io · its alternatives →

12. 12
    new.space beta▲217

    Transfer pics & files, send links & share docs, all E2EE

    2023 · new.space · its alternatives →

13. 13
    Surfly▲183

    Simple, Fast, and Secure Co-browsing

    2017 · surfly.com · its alternatives →

14. 14
    MeeroDrop▲70

    Goodbye to basic transfers, hello to custom sharing spaces

    2020 · mega888ai.com · its alternatives →

15. 15
    Duple▲121

    Create your own private cloud at home

    2019 · its alternatives →

16. 16
    ByteNite▲206

    Hi HN, I’m one of the creators of ByteNite (https://bytenite.com). We built it for developers running compute-heavy containerized workloads (AI, ETL, batch jobs) who are frustrated with the limitations of traditional serverless platforms: timeouts, cold starts, orchestration complexity, and limited runtime control. ByteNite is a serverless platform that lets you submit distributed jobs packaged as Docker containers. You define simple or complex fan-out/fan-in logic, set your hardware requirements, and we handle the rest—distributing execution across warm cloud runners (CPUs,…

    2025 · docs.bytenite.com · its alternatives →

17. 17
    Distributed▲103

    Stay in sync with friends, family and colleagues

    2021 · its alternatives →

18. 18
    Roof▲134

    Delightful home sharing for roommates and their landlords.

    2018 · its alternatives →

19. 19
    Seamless▲85

    Cross-platform files and text sharing app

    2021 · its alternatives →

20. 20
    ProjectSend▲75

    Securely share files with your team and clients

    2023 · projectsend.org · its alternatives →

21. 21
    Space-Bin▲80

    Secure temporary workspaces. No sign-up required.

    Jul 2026 · space-bin.onrender.com · its alternatives →

22. 22
    Nimbella▲91

    Simple serverless cloud for developers

    2020 · its alternatives →

23. 23
    middlespot▲102

    A web desktop for keeping what's important.

    2018 · its alternatives →

24. 24
    Cloudron – Get Your Own Cloud▲64

    Cloudron is a complete solution for running apps on your server and keeping them up-to-date and secure.

    2015 · cloudron.io · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →