Dev tools · alternatives · 2026
24 alternatives to Opensource Builders
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…
Opensource Builders is a web app that helps users find open-source alternatives to commercial software applications. The platform allows people to search for free, open-source options to replace paid tools they… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Opensource Builders launched in 2020; newer entries below may have overtaken it.
- 1
200+ open source alternatives to popular B2B tools
2021 · btw.so · its alternatives →
- 2
Discover open source alternatives to your proprietary SaaS
2022 · opensourcealternative.to · its alternatives →
- 3OS
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 →
- 4
OpenAlternative▲459Discover open source alternatives to popular software
2024 · openalternative.co · its alternatives →
- 5AD
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!
2024 · openalternative.co · its alternatives →
- 6
The best open-source alternatives for you next maker project
2020 · opensourcestash.com · its alternatives →
- 7
🔥 🔥 🔥 The Open Source Retool Alternative. Contribute to openblocks-dev/openblocks development by creating an account on GitHub.
2022 · github.com · 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 →
- 9
SaaS Blocks 2.0▲188300+ open-source and paid tools to build a SaaS application
2022 · saasblocks.io · its alternatives →
- 10
Open-Source Form Builder. Contribute to heyform/heyform development by creating an account on GitHub.
2024 · github.com · its alternatives →
- 11
Discover open source alternatives to popular SaaS software
2025 · openalternative.co · its alternatives →
- 12
Find alternatives and actual replacements for B2B software
2017 · siftery.com · its alternatives →
- 13
Hi everyone, we’re a small team, supported by Mozilla, who are working on re-imagining a UI for training, tuning and testing local LLMs. Everything is open source. If you’ve been training your own LLMs or have always wanted to, we’d love for you to play with the tool and give feedback on what the future development experience for LLM engineering could look like.
2025 · github.com · its alternatives →
- 14OS
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 →
- 15
Open SaaS 2.0▲438I launched Open SaaS about a year and a half ago and surprisingly it’s become one of the most popular free SaaS boilerplate starters on github (https://github.com/wasp/open-saas). After 2 years of work total, I’m pleased to launch what I’m calling “Open SaaS v2.0”. Here’s a breakdown of all the features and updates I’ve made to it over time: * New Big, Shiny Things for v2.0 * - Complete redesign with Shadcn UI for a modern and consistent look (themeability coming soon...). - Script that autogenerates an LLM-friendly version of the documentation…
2025 · opensaas.sh · its alternatives →
- 16
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 →
- 17
Scoutflo▲228The first-ever commercial open-source marketplace - for Free
2023 · atlas.scoutflo.com · its alternatives →
- 18
+120 tools to build and augment your SaaS application
2019 · saasblocks.io · its alternatives →
- 19
Top 50+ open source tools to build your brand
2022 · cherryyadvendu.gumroad.com · its alternatives →
- 20
Console▲224A free weekly roundup of the latest in open-source software
2021 · console.substack.com · its alternatives →
- 21
- 22AD
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 →
- 23
Winners of PH, DevHunt, HackerNews, GitHub & viral/trending
2023 · osssoftware.org · its alternatives →
- 24
Hey HNs: This is Vincent from the ILLA team. I'm sure you guys see tons of "Open-source" and "Alternative to Retool" these days. I won't deny Retool is a great product, and so are many open-source competitors such as Appsmith, Budibase, Tooljet etc. However, what makes ILLA so special? What advantages does ILLA have that allow users to choose ILLA instead of others? Well, I would like to answer those questions to all folks at HN one by one. First, we are similar to Retool, or Appsmith but we have many different our own features. We are a true open-source project all the folks here can check…
2022 · github.com · its alternatives →
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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 →