Opensource Builders

Find and build open source alternatives

What it does

Discover and build open source alternatives to popular proprietary software

Opensource Builders2020 · ▲496
Find open-source alternatives to commercial apps
Open Source Alternatives2021 · btw.so · ▲807
200+ open source alternatives to popular B2B tools
Open Source Alternative To2022 · ▲381
Discover open source alternatives to your proprietary SaaS
OB
Opensource.builders, open-source alternatives to commercial software2020 · opensource.builders · ▲161
OS
Open-source alternatives to tools You pay for2023 · osssoftware.org · ▲245
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.
What To Build2025 · ▲196
Concept to discover & analyze relevant open-source projects

Dograh▲592
The open source VAPI alternative
Dev tools · 27d ago · dograh.com
Meridian▲530
Don't let your work go unnoticed. Get promoted!
Dev tools · 22d ago · meridiona.com
x1▲516
Lovable for iPhone apps go from idea to App Store
Dev tools · 13d ago · x1.new
Open-Source eInk Bike Computer▲417
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 · 3d ago · opentrailpaper.com
Nuphos▲380
The AI-Native DevOps Workspace.
Dev tools · 26d ago · nuphos.ai
Lettertrace▲375
Track your AI visibility for free (using your own API keys!)
Dev tools · 27d ago · lettertrace.com

Guideflow▲1,341
The AI demo automation platform for SaaS
AI · Nov 2025 · guideflow.com
IB
I built a synth for my daughter▲1,278
Life & fun · Nov 2025 · bitsnpieces.dev
Welltory▲1,030
Stop energy drain
Work · Nov 2025 · welltory.com
Gemini 3▲1,007
Bring any idea to life with multimodal capabilities
AI · Nov 2025 · blog.google
TrustMRR▲836
The database of verified startup revenues
Growth · Nov 2025 · trustmrr.com
B
Boing▲782
Life & fun · Nov 2025 · boing.greg.technology