The AltStack

What it does

Discover 460+ open-source alternatives to expensive proprietary SaaS. Compare tools side-by-side, calculate your savings, and deploy to your own infrastructure in one click with production-ready Docker Compose configs. Stop renting your infrastructure.

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  Open Source Alternative To2022 · ▲381

  Discover open source alternatives to your proprietary SaaS

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  Open Source Alternatives2021 · btw.so · ▲807

  200+ open source alternatives to popular B2B tools

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  I open-sourced my Go and Next B2B SaaS Starter (deploy anywhere, MIT)Dec 2025 · github.com · ▲83

  Hi HN, I'm Mohammed, a technical founder who loves shipping and giving back to the community. I'm open-sourcing the full-stack engine that powers my B2B product, apflow.co. What it is: A production B2B starter with a Go backend and Next.js frontend. Both are fully Dockerized with separate containers. No Vercel. No Supabase. Deploy the whole thing on a $6 VPS, or split frontend and backend across different providers. You own the infrastructure. The problem I was solving: Every SaaS starter I evaluated had the same issue: they locked me into someone else's platform. Vercel for hosting.…

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  A directory of open source alternatives to proprietary software2024 · openalternative.co · ▲156

  Hi, Piotr here I was collecting nice open-source companies for quite some time now. Mostly to take some inspiration and learn from their code. Last week, I though it would be fun to learn this Astro thing everyone's talking about. So I thought building a directory website out of this collection was pretty good idea. After 2 days of building, OpenAlternative was born. It's a community driven list of open source alternatives to proprietary software and applications. Enjoy and thank you for your support!

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  zeroApr 2026 · shipzero.sh · ▲94

  One command to deploy Docker containers to your own server

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  Stop wasting money on Saas services you don't use2012 · saasly.com · ▲76

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  Dograh▲592

  The open source VAPI alternative

  Dev tools · 25d ago · dograh.com

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  Meridian▲530

  Don't let your work go unnoticed. Get promoted!

  Dev tools · 20d ago · meridiona.com

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  x1▲516

  Lovable for iPhone apps go from idea to App Store

  Dev tools · 11d ago · x1.new

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  Computable GPU Index (CGI)▲423

  The first open-source price index for GPU compute

  Dev tools · 10d ago · getcomputable.com

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  Open-Source eInk Bike Computer▲405

  OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.

  Dev tools · 2d ago · opentrailpaper.com

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  The GTM Co-Founder▲402

  Open-source GTM skills for technical founders

  Dev tools · 29d ago · gtmcofounder.com

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  Lightfield▲891

  AI-native CRM that builds itself and does work for you

  AI · Mar 2026 · lightfield.app

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  Tobira.ai▲730

  A network where AI agents find deals for their humans

  AI · Mar 2026 · tobira.ai

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  Claude Import Memory▲725

  Switch from ChatGPT to Claude with import memory feature

  AI · Mar 2026 · claude.com

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  Littlebird▲712

  The AI assistant that already knows your work

  AI · Mar 2026 · littlebird.ai

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  Viktor.com▲701

  Your AI Coworker that proactively executes tasks

  AI · Mar 2026 · viktor.com

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  Jupid▲664

  File your taxes with Claude Code

  Commerce · Mar 2026 · jupid.com