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Open Source Alternatives

List of open-source alternatives to everyday SaaS products.

btw-so/open-source-alternatives

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List stars: 8,734
README repos: 146
Indexed repos: 145
List commits: 59
Forks: 365
Open issues: 47

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Latest scan 2026-09-03 10:49

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27 repos matching these filters.

Package manager: go-modules

Latest repo push 2026-09-04

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gohugoio/hugo

The world’s fastest framework for building websites.

AI dev

Stack

Go Cobra gRPC Go Tailwind CSS Go modules npm

GitHub topics

#blog-engine #cms #content-management-system #documentation-tool #go #hugo

Updated: 2026-08-04
Lists: 2 list mentions
First commit: 2013-07-04
License: Apache-2.0
Issues: 232 open

89,316

stars

Forks: 8,321
Commits: 9,868 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

hoppscotch/hoppscotch

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

Stack

TypeScript Axum Express NestJS Svelte Cargo Go modules npm

GitHub topics

#api #api-client #api-rest #api-testing #developer-tools #graphql

Updated: 2026-08-16
Lists: 8 list mentions
First commit: 2019-08-21
License: MIT
Issues: 795 open

80,052

stars

Forks: 6,036
Commits: 6,177 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

prometheus/prometheus

The Prometheus monitoring system and time series database.

AI dev

Stack

Go Cobra gRPC Go React Vite Go modules npm pnpm

GitHub topics

#alerting #graphing #hacktoberfest #metrics #monitoring #prometheus

Updated: 2026-08-03
Lists: 5 list mentions
First commit: 2012-11-24
License: Apache-2.0
Issues: 899 open

65,527

stars

Forks: 10,738
Commits: 18,207 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

remotion-dev/remotion

🎥 Make videos programmatically with React

AI dev

Stack

TypeScript Astro Express Next.js React Bun Bundler Cargo

GitHub topics

#javascript #react #video

Updated: 2026-09-03
Lists: 1 list mention
First commit: 2020-06-23
License: NOASSERTION
Issues: 169 open

58,241

stars

Forks: 4,431
Commits: 35,894 commits
Star growth, last 7 days: +599 +1.0%
Commit velocity, last 7 days: +182 +0.5%

Website GitHub

siyuan-note/siyuan

An open-source, privacy-first, self-hosted knowledge workspace where humans and AI agents work together 开源、隐私优先、自托管的知识工作空间，让人与智能体在此协作

AI dev

Stack

TypeScript Cobra Electron Gin Go modules pnpm

GitHub topics

#agentic-ai #ai-agent #digital-garden #electron #knowledge-base #knowledge-graph

Updated: 2026-09-02
Lists: 5 list mentions
First commit: 2020-08-30
License: AGPL-3.0
Issues: 75 open

46,106

stars

Forks: 2,976
Commits: 27,108 commits
Star growth, last 7 days: 0 0.0%
Commit velocity, last 7 days: 0 0.0%

Website GitHub

milvus-io/milvus

Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search

AI dev

Stack

Go Axum Cobra Gin gRPC Go Cargo CMake Conan

GitHub topics

#anns #cloud-native #diskann #distributed #embedding-database #embedding-similarity

Updated: 2026-09-04
Lists: 8 list mentions
First commit: 2019-03-18
License: Apache-2.0
Issues: 1,320 open

45,963

stars

Forks: 4,223
Commits: 25,502 commits
Star growth, last 7 days: +106 +0.2%
Commit velocity, last 7 days: +49 +0.2%

Website GitHub

mattermost/mattermost

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

AI dev

Stack

TypeScript Cobra Express gRPC Go React Go modules npm

GitHub topics

#collaboration #golang #hacktoberfest #mattermost #monorepo #react

Updated: 2026-08-23
Lists: 6 list mentions
First commit: 2015-06-15
License: NOASSERTION
Issues: 967 open

38,889

stars

Forks: 8,929
Commits: 23,131 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

PostHog/posthog

:hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session replay, flags, experiments, error tracking, logs, and more – capture all the context agents need to diagnose problems, uncover opportunities, and ship fixes. Steer it all from Slack, web, desktop, or the MCP.

AI dev

Stack

Python Cargo CMake Go modules

GitHub topics

#ab-testing #ai-analytics #analytics #cdp #data-warehouse #experiments

Updated: 2026-08-03
Lists: 8 list mentions
First commit: 2020-01-23
License: NOASSERTION
Issues: 5,373 open

37,458

stars

Forks: 3,133
Commits: 53,463 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

binwiederhier/ntfy

Send push notifications to your phone or desktop using PUT/POST

Stack

Go gRPC Go React Vite Go modules npm pip

GitHub topics

#curl #notifications #ntfy #ntfysh #pubsub #push-notifications

Updated: 2026-08-20
Lists: 2 list mentions
First commit: 2021-10-22
License: Apache-2.0
Issues: 364 open

33,731

stars

Forks: 1,561
Commits: 3,997 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

dokku/dokku

A docker-powered PaaS that helps you build and manage the lifecycle of applications

Stack

Shell Go modules npm pip

GitHub topics

#buildpack #containers #devops #docker #dokku #heroku

Updated: 2026-08-02
Lists: 3 list mentions
First commit: 2013-06-08
License: MIT
Issues: 29 open

32,084

stars

Forks: 2,064
Commits: 14,085 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

mattermost-community/focalboard

Focalboard is an open source, self-hosted alternative to Trello, Notion, and Asana.

Stack

TypeScript gRPC Go React .NET SDK Go modules npm

GitHub topics

#asana #collaboration #goal-tracking #golang #hacktoberfest #kanban-board

Updated: 2026-05-18
Lists: 6 list mentions
First commit: 2020-10-08
License: NOASSERTION
Issues: 784 open

26,419

stars

Forks: 2,577
Commits: 3,646 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

knadh/listmonk

High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.

Stack

Go React Vite Vue Go modules pip Yarn

GitHub topics

#campaign #campaign-management #email-marketing #email-subscription #listmonk #mailing-list

Updated: 2026-09-03
Lists: 3 list mentions
First commit: 2018-10-25
License: AGPL-3.0
Issues: 117 open

23,249

stars

Forks: 2,579
Commits: 2,027 commits
Star growth, last 7 days: +86 +0.4%
Commit velocity, last 7 days: 0 0.0%

Website GitHub

windmill-labs/windmill

Open-source developer platform to power your entire infra and turn scripts into webhooks, workflows and UIs. Fastest workflow engine (13x vs Airflow). Open-source alternative to Retool and Temporal.

AI dev

Stack

Rust Axum Svelte SvelteKit Tailwind CSS Bun Cargo Go modules

GitHub topics

#low-code #open-source #platform #postgresql #python #self-hostable

Updated: 2026-09-04
Lists: 2 list mentions
First commit: 2022-05-05
License: NOASSERTION
Issues: 850 open

17,777

stars

Forks: 1,090
Commits: 14,585 commits
Star growth, last 7 days: +64 +0.4%
Commit velocity, last 7 days: +58 +0.4%

Website GitHub

questdb/questdb

QuestDB is a high performance, open-source, time-series database

AI dev

Stack

Java Symfony Cargo CMake Composer

GitHub topics

#capital-markets #cpp #database #financial-analysis #grafana #java

Updated: 2026-08-24
Lists: 2 list mentions
First commit: 2014-04-28
License: Apache-2.0
Issues: 921 open

17,273

stars

Forks: 1,639
Commits: 6,295 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

weaviate/weaviate

Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector search with structured filtering with the fault tolerance and scalability of a cloud-native database.

AI dev

Stack

Go Cobra gRPC Go pytest Go modules PEP 517 pip

GitHub topics

#approximate-nearest-neighbor-search #generative-search #grpc #hnsw #hybrid-search #image-search

Updated: 2026-08-22
Lists: 4 list mentions
First commit: 2016-03-30
License: BSD-3-Clause
Issues: 695 open

16,745

stars

Forks: 1,374
Commits: 28,703 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

gotify/server

A simple server for sending and receiving messages in real-time per WebSocket. (Includes a sleek web-ui)

Stack

Go Gin React Vite Go modules npm Yarn

GitHub topics

#api #cloud #free-software #golang #gotify #hosting

Updated: 2026-08-06
Lists: 3 list mentions
First commit: 2018-01-19
License: NOASSERTION
Issues: 86 open

15,649

stars

Forks: 856
Commits: 924 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

getlago/lago

Open Source Metering and Usage Based Billing API ⭐️ Consumption tracking, Subscription management, Pricing iterations, Payment orchestration & Revenue analytics

AI dev

Stack

Go Go modules

GitHub topics

#analytics #billing #clickhouse #events #fintech #go

Updated: 2026-07-27
Lists: 4 list mentions
First commit: 2022-02-28
License: AGPL-3.0
Issues: 24 open

10,282

stars

Forks: 712
Commits: 746 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

highlight/highlight

highlight.io: The open source, full-stack monitoring platform. Error monitoring, session replay, logging, distributed tracing, and more.

AI dev

Stack

TypeScript Actix Web Angular Celery Django Bundler Cargo .NET SDK

GitHub topics

#apm #full-stack #golang #metrics #monitoring #observability

Updated: 2026-07-27
Lists: 2 list mentions
First commit: 2020-08-20
License: NOASSERTION
Issues: 554 open

9,354

stars

Forks: 671
Commits: 7,061 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

nhost/nhost

The Open Source Firebase Alternative with GraphQL.

AI dev

Stack

TypeScript Astro Expo Express Gin Bun Go modules npm

GitHub topics

#authentication #backend #backend-as-a-service #database #firebase #flutter

Updated: 2026-08-21
Lists: 3 list mentions
First commit: 2021-02-09
License: MIT
Issues: 138 open

9,280

stars

Forks: 612
Commits: 9,290 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

writefreely/writefreely

A clean, Markdown-based publishing platform made for writers. Write together and build a community.

Stack

Go Go modules npm

GitHub topics

#activitypub #beta #blogging #federation #go #markdown

Updated: 2026-08-07
Lists: 3 list mentions
First commit: 2016-09-04
License: AGPL-3.0
Issues: 110 open

5,216

stars

Forks: 385
Commits: 1,957 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

jitsucom/jitsu

Jitsu is an open-source Segment alternative. Fully-scriptable data ingestion engine for modern data teams. Set-up a real-time data pipeline in minutes, not days

AI dev

Stack

TypeScript Cobra Express Gin gRPC Go Go modules npm pnpm

GitHub topics

#bigquery #clickhouse #data-collection #data-connectors #data-integration #golang

Updated: 2026-08-21
Lists: 2 list mentions
First commit: 2022-06-22
License: MIT
Issues: 32 open

5,038

stars

Forks: 395
Commits: 3,501 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

linuxfoundation/crowd.dev

LFX Community Data Platform (CDP)

AI dev

Stack

TypeScript Express FastAPI gRPC Go pytest Go modules npm pip

GitHub topics

#cdp #community #open-source

Updated: 2026-08-21
Lists: 2 list mentions
First commit: 2022-08-25
License: Apache-2.0
Issues: 33 open

3,365

stars

Forks: 729
Commits: 4,757 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

openflagr/flagr

Flagr is a feature flagging, A/B testing and dynamic configuration microservice

AI dev

Stack

Go gRPC Go Svelte Vite Vue Go modules npm

GitHub topics

#ab-testing #dynamic-configuration #feature-flags #feature-toggles #golang #swagger

Updated: 2026-09-01
Lists: 1 list mention
First commit: 2017-10-02
License: Apache-2.0
Issues: 1 open

2,606

stars

Forks: 204
Commits: 882 commits
Star growth, last 7 days: 0 0.0%
Commit velocity, last 7 days: 0 0.0%

Website GitHub

featbit/featbit

Enterprise-grade feature flag platform that you can self-host. Get started - free.

AI dev

Stack

TypeScript Angular ASP.NET Core Entity Framework Flask .NET SDK Go modules Gradle

GitHub topics

#ab-test #ab-testing #asp-net-core #continuous-delivery #csharp #dotnet

Updated: 2026-08-27
Lists: 2 list mentions
First commit: 2022-08-28
License: MIT
Issues: 24 open

1,904

stars

Forks: 144
Commits: 1,131 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

ycm-core/ycmd

A code-completion & code-comprehension server

Stack

C++ Cargo CMake .NET SDK

GitHub topics

#code-analysis #code-completion #editor #semantic-engine

Updated: 2026-09-03
Lists: 1 list mention
First commit: 2014-05-13
License: GPL-3.0
Issues: 34 open

1,741

stars

Forks: 779
Commits: 3,356 commits
Star growth, last 7 days: 0 0.0%
Commit velocity, last 7 days: 0 0.0%

Website GitHub

SolidInvoice/SolidInvoice

Simple and elegant invoicing solution.

AI dev

Stack

PHP Cobra gRPC Go React Symfony Bun Composer Go modules

GitHub topics

#billing #billing-application #freelancer #hacktoberfest #invoice #invoicing

Updated: 2026-09-01
Lists: 2 list mentions
First commit: 2012-02-14
License: MIT
Issues: 188 open

964

stars

Forks: 232
Commits: 5,314 commits
Star growth, last 7 days: 0 0.0%
Commit velocity, last 7 days: 0 0.0%

Website GitHub

dotenx/dotenx

No-code and Low-code all-in-one platform to build landing pages, websites, web applications, APIs, automations. An alternative for Wix, Webflow, Zapier, and more

Stack

TypeScript Cobra Gin gRPC Go React Go modules npm pip

GitHub topics

#application-launcher #automation #backend #form #golang #no-code

Updated: 2024-04-13
Lists: 1 list mention
First commit: 2022-01-30
License: NOASSERTION
Issues: 27 open

649

stars

Forks: 67
Commits: 1,202 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

Website GitHub

Activity

Default branch: main
Last pushed: 2024-11-08
GitHub updated: 2026-09-03
Created: 2023-05-22
First commit: -
Last scanned: 2026-09-03 10:49
Watchers: 68

Indexed repo mix

Repo stars: 3,415,625
Repo forks: 420,115
Active: 143
Archived: 2

Languages

TypeScript (61) PHP (19) JavaScript (13) Go (10) Python (8) Java (7) Ruby (6) C++ (4) Rust (4) Clojure (3) Dart (1) Elixir (1)