Dev tools · alternatives · 2026
24 alternatives to A directory of open source alternatives to proprietary software
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!
OpenAlternative is a community-driven directory that lists open source software alternatives to proprietary applications. Built with Astro, it serves developers and software users seeking free, open source replacements… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. A directory of open source alternatives to proprietary software launched in 2024; newer entries below may have overtaken it.
- 1
OpenAlternative▲459Discover open source alternatives to popular software
2024 · openalternative.co · its alternatives →
- 2
Discover open source alternatives to popular SaaS software
2025 · openalternative.co · its alternatives →
- 3
200+ open source alternatives to popular B2B tools
2021 · btw.so · its alternatives →
- 4
Discover open source alternatives to your proprietary SaaS
2022 · opensourcealternative.to · its alternatives →
- 5AD
Hi guys, I want to share the recent project i developed. I built AlternateOSS, a directory of free, open source alternatives and competitors to popular software. Currently, i have listed 200+ tools so far and organized them carefully based on their main functionalities. I ranked them based on its category relevancy and feature completeness. Some technical details & features: - fully static site built with Astro - View Transition API for smooth navigation - Instant/static search with Astro static endpoints If you have an open source project that can be an alternative to popular software,…
2024 · alternateoss.com · its alternatives →
- 6
A couple of years ago, I had an interesting idea. What if there was a marketplace where all the underlying tech was open-source? The order management system, the storefront, customer support, etc. The marketplace would simply connect to the seller’s infra instead of locking them in. If, for some reason, the seller is removed from the marketplace, their software stays with them and they can continue accepting orders directly. This model can be used to disrupt any marketplace from AirBNB to UberEats: building tech for home renters and restaurants and later, leveraging that to build a competing…
2022 · openship.org · its alternatives →
- 7
Hey everyone, A couple years ago, I got into programming and fell down the rabbit hole of open-source software. I started realizing a lot of the commercial software I used had open-source alternatives. In 2020, those alternatives were good but not perfect replacements. With LLMs entering the scene, there are even more open-source alternatives now and they're narrowing the gap between proprietary options. LLMs also got me thinking: will people continue using proprietary or opensource applications in the future when they can build their own personal application tailored specifically for their…
2020 · opensource.builders · its alternatives →
- 8
AlterBase▲189Hi, I'm software dev with 2x exit. I collected some affordable alternatives to expensive and well-known tools for a while. Mostly for personal use. Now I built the platform and added them here. Also, community help to grow with their tools and suggestions. Enjoy and if you have any alternative for popular softwares or have a suggestions please submit here to make it the internet's biggest alternative software platform.
Nov 2025 · alterbase.co · its alternatives →
- 9OS
hey makers, I've spent the whole night to compile this list out of > winners of Product Hunt > best dev tools on DevHunt > recently active on GitHub > most internet backlinks > most mentions as "alternative to .." Let me know if I should add anything there.
2023 · osssoftware.org · its alternatives →
- 10OS
I got tired of collecting open source projects in my chrome bookmarks so I decided to compile a curated list of: - Recently active projects on GitHub - Mostly dev tools (but also productivity, analytics) - Projects which are "Alternative to X software" My bookmarks are finally empty:D If you have a great open source tool you use, I'd be glad to hear your suggestions. Also, any feedback is greatly appreciated.
2025 · alternativeoss.com · its alternatives →
- 11CL
Hey people! I have been compiling a database of opensource alternatives and I'm super proud of it so far. It serves as a searchable directory for high-quality opensource. After tons of hours I've managed to compile a database of 1000+ opensource software. I've seen other sites which have the same premise and all the GitHub Awesome Lists, but they lack in showing if the repo is active, abandoned, experimental, buggy/unstable, has a restrictive license or corporate influence like this does. Thanks for your time, if you have any recommendations for features/additions I'd love to hear.
Feb 2026 · opensrc.me · its alternatives →
- 12
Hey HN, we're a YC startup building an open-source, privacy-first alternative to Perplexity Comet. No invite system unlike bunch of others – you can download it today from our website or GitHub: https://github.com/browseros-ai/BrowserOS --- Why bother building an alternative? We believe browsers will become the new operating systems, where we offload much bunch of our work to AI agents. But these agents will have access to all your sensitive data – emails, docs, on top of your browser history. Open-source, privacy-first alternatives need to exist. We're not a search or ad…
2025 · browseros.com · its alternatives →
- 13
The best open-source alternatives for you next maker project
2020 · opensourcestash.com · its alternatives →
- 14
Hey HN, I am proud to show you guys that I have built an open source alternative to Azure OpenAI services. Azure OpenAI services was born out of companies needing enhanced security and access control for using different GPT models. I want to build an OSS version of Azure OpenAI services that people could self host in their own infrastructure. "How can I track LLM spend per API key?" "Can I create a development OpenAI API key with limited access for Bob?" "Can I see my LLM spend breakdown by models and endpoints?" "Can I create 100 OpenAI API keys that my students could use in a classroom…
2023 · github.com · its alternatives →
- 15
- 16
I work on R00M 101, a Reddit-based OSINT profiler. While building it, I realized most open-source intelligence (OSINT) tools are scattered across GitHub, outdated blog posts, or random Discords. So I put together a public-facing directory of 100+ OSINT tools used by analysts, journalists, and security folks, free, filterable, and categorized by risk, platform, and use case. The idea was to make something useful and no-friction. Built with static HTML + SQL backend + a lot of caffeine. Would love feedback on how to improve the UX or tool curation. If anyone wants to contribute tools or help…
2025 · r00m101.com · its alternatives →
- 17
2015 · github.com · its alternatives →
- 18
Free replacements for Slack, Notion, Figma & 60+ paid tools
May 2026 · osalfinder.com · its alternatives →
- 19
- 20AO
Hello HN! My name is Rémy and I recently published an astronomy dashboard where everything is open source: the code of the website, the framework it is based on and the library that computes astronomical data. For the last few years, I have been developing the Ruby library Astronoby (https://github.com/rhannequin/astronoby) with as much dedication and perseverance I could while I don't have any scientific academic background. My end goal was to use this library and build a website that not only provides as much data as possible, but let anyone access and understand how it…
Nov 2025 · its alternatives →
- 21
- 22
I built this as a small side project to learn and experiment, and I ended up with this! I used a subdomain from my personal portfolio, and everything else runs on free tiers. The project uses Nuxt, SVG, Cloudflare Workers, D1 (SQL), KV, Terraform, and some agentic coding with OpenAI Codex and Claude Code. What started as a joke among friends turned into a fun excuse to build something end to end, from zero to production, and to explore a few things I’d never touched before. I’d really appreciate any feedback or suggestions.
Jan 2026 · certificate.brendonmatos.com · its alternatives →
- 23
(Ab)using technology for fun & profit.
2020 · opensourceweekly.org · its alternatives →
- 24
Discover the best open-source alternatives
Jun 2026 · betteropensource.jasminbhesaniya.com · its alternatives →
Also compare
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 →