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Open Source Alternatives

List of open-source alternatives to everyday SaaS products.

btw-so/open-source-alternatives

Open GitHub

List stars: 8,830
README repos: 146
Indexed repos: 145
List commits: 59
Forks: 376
Open issues: 49

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Latest scan 2026-10-17 10:50

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27 repos matching these filters.

Package manager: go-modules

Latest repo push 2026-10-17

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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: 2026-10-16
Lists: 2 list mentions
First commit: 2013-07-04
License: Apache-2.0
Issues: 204 open

90,143

stars

Forks: 8,395
Commits: 10,027 commits
Star growth, last 7 days: +61 +0.1%
Commit velocity, last 7 days: +21 +0.2%

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: 2026-09-30
Lists: 8 list mentions
First commit: 2019-08-21
License: MIT
Issues: 846 open

80,558

stars

Forks: 6,138
Commits: 6,201 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: 2026-10-16
Lists: 6 list mentions
First commit: 2012-11-24
License: Apache-2.0
Issues: 983 open

66,598

stars

Forks: 10,917
Commits: 18,958 commits
Star growth, last 7 days: +136 +0.2%
Commit velocity, last 7 days: +117 +0.6%

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: 2026-10-16
Lists: 2 list mentions
First commit: 2020-06-23
License: NOASSERTION
Issues: 180 open

64,614

stars

Forks: 5,113
Commits: 39,191 commits
Star growth, last 7 days: +1,515 +2.4%
Commit velocity, last 7 days: +542 +1.4%

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 #knowledge-base #local-first #markdown #mcp

Updated: 2026-10-15
Lists: 5 list mentions
First commit: 2020-08-30
License: AGPL-3.0
Issues: 15 open

46,771

stars

Forks: 3,065
Commits: 28,933 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: 2026-10-17
Lists: 8 list mentions
First commit: 2019-03-18
License: Apache-2.0
Issues: 1,476 open

46,402

stars

Forks: 4,303
Commits: 25,778 commits
Star growth, last 7 days: +53 +0.1%
Commit velocity, last 7 days: +54 +0.2%

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 Axum Celery Cobra Django Cargo CMake Go modules

GitHub topics

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

Updated: 2026-09-13
Lists: 9 list mentions
First commit: 2020-01-23
License: NOASSERTION
Issues: 5,554 open

39,762

stars

Forks: 3,376
Commits: 60,540 commits
Star growth, last 7 days: No 7-day history
Commit velocity, last 7 days: No 7-day history

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: 2026-10-12
Lists: 7 list mentions
First commit: 2015-06-15
License: NOASSERTION
Issues: 1,092 open

39,317

stars

Forks: 9,043
Commits: 23,506 commits
Star growth, last 7 days: 0 0.0%
Commit velocity, last 7 days: 0 0.0%

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: 2026-10-08
Lists: 2 list mentions
First commit: 2021-10-22
License: Apache-2.0
Issues: 381 open

34,676

stars

Forks: 1,641
Commits: 4,118 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

Go Cobra Express gRPC Go Go modules npm pip

GitHub topics

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

Updated: 2026-10-11
Lists: 4 list mentions
First commit: 2013-06-08
License: MIT
Issues: 40 open

32,178

stars

Forks: 2,090
Commits: 14,505 commits
Star growth, last 7 days: 0 0.0%
Commit velocity, last 7 days: 0 0.0%

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

26,493

stars

Forks: 2,583
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 Bun Go modules npm

GitHub topics

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

Updated: 2026-10-17
Lists: 3 list mentions
First commit: 2018-10-25
License: AGPL-3.0
Issues: 89 open

23,814

stars

Forks: 2,685
Commits: 2,219 commits
Star growth, last 7 days: +73 +0.3%
Commit velocity, last 7 days: +43 +2.0%

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 React Svelte SvelteKit Bun Cargo Go modules

GitHub topics

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

Updated: 2026-10-16
Lists: 2 list mentions
First commit: 2022-05-05
License: NOASSERTION
Issues: 858 open

18,207

stars

Forks: 1,120
Commits: 15,286 commits
Star growth, last 7 days: +51 +0.3%
Commit velocity, last 7 days: +144 +1.0%

Website GitHub

questdb/questdb

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

AI dev

Stack

Java Symfony Cargo CMake Composer

GitHub topics

#apache-arrow #capital-markets #database #historian #kdb #low-latency

Updated: 2026-10-08
Lists: 2 list mentions
First commit: 2014-04-28
License: Apache-2.0
Issues: 1,088 open

17,431

stars

Forks: 1,661
Commits: 6,345 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: 2026-10-04
Lists: 4 list mentions
First commit: 2016-03-30
License: NOASSERTION
Issues: 800 open

16,866

stars

Forks: 1,419
Commits: 30,547 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: 2026-09-15
Lists: 3 list mentions
First commit: 2018-01-19
License: NOASSERTION
Issues: 84 open

15,914

stars

Forks: 873
Commits: 962 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 gRPC Go Go modules

GitHub topics

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

Updated: 2026-09-10
Lists: 4 list mentions
First commit: 2022-02-28
License: AGPL-3.0
Issues: 23 open

10,525

stars

Forks: 744
Commits: 769 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: 2026-08-20
Lists: 2 list mentions
First commit: 2020-08-20
License: NOASSERTION
Issues: 553 open

9,374

stars

Forks: 675
Commits: 7,064 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: 2026-10-06
Lists: 3 list mentions
First commit: 2021-02-09
License: MIT
Issues: 190 open

9,347

stars

Forks: 634
Commits: 9,432 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: 2026-09-18
Lists: 3 list mentions
First commit: 2016-09-04
License: AGPL-3.0
Issues: 111 open

5,253

stars

Forks: 398
Commits: 2,013 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: 2026-10-16
Lists: 3 list mentions
First commit: 2022-06-22
License: MIT
Issues: 44 open

5,107

stars

Forks: 402
Commits: 3,939 commits
Star growth, last 7 days: 0 0.0%
Commit velocity, last 7 days: 0 0.0%

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: 2026-10-02
Lists: 2 list mentions
First commit: 2022-08-25
License: Apache-2.0
Issues: 16 open

3,368

stars

Forks: 725
Commits: 5,128 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: 2026-10-06
Lists: 1 list mention
First commit: 2017-10-02
License: Apache-2.0
Issues: 4 open

2,609

stars

Forks: 207
Commits: 903 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

C# ASP.NET Core Entity Framework Flask gRPC Go .NET SDK Go modules Gradle

GitHub topics

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

Updated: 2026-10-08
Lists: 2 list mentions
First commit: 2022-08-28
License: MIT
Issues: 36 open

1,937

stars

Forks: 148
Commits: 1,158 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: 2026-10-08
Lists: 1 list mention
First commit: 2014-05-13
License: GPL-3.0
Issues: 36 open

1,740

stars

Forks: 776
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: 2026-10-14
Lists: 2 list mentions
First commit: 2012-02-14
License: MIT
Issues: 228 open

978

stars

Forks: 242
Commits: 5,540 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: 66
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: 2026-10-17
Created: 2023-05-22
First commit: -
Last scanned: 2026-10-17 10:50
Watchers: 70

Indexed repo mix

Repo stars: 3,471,601
Repo forks: 432,078
Active: 143
Archived: 2

Languages

TypeScript (59) PHP (20) JavaScript (12) Go (11) Python (8) Java (7) Ruby (6) C++ (4) Rust (4) Clojure (3) Astro (1) C# (1)