Open Source

Top Open Source Startups

Open source companies building in public — transparent, community-driven, and free to self-host

111 hand-picked Open Source companies

USA · 54Germany · 9UK · 8France · 5Canada · 4Singapore · 3Sweden · 3India · 3
OPEN SOURCE

Plausible Analytics

Simple, privacy-friendly web analytics

BOOTSTRAPPEDEstoniaEST. 2019
plausible.ioVisit
OPEN SOURCE

Odoo

All-in-one open source business apps

VC FUNDEDBelgiumEST. 2005
odoo.comVisit
OPEN SOURCE

Lichess

Free, open source online chess for everyone

BOOTSTRAPPEDFranceEST. 2010
lichess.orgVisit
OPEN SOURCE

Forem (DEV)

Open source community platform behind DEV.to

BOOTSTRAPPEDUSAEST. 2017
dev.toVisit
OPEN SOURCE

Umami

Open source, privacy-focused analytics

BOOTSTRAPPEDUSAEST. 2020
umami.isVisit
OPEN SOURCE

Coolify

Open source, self-hostable Heroku and Netlify alternative

BOOTSTRAPPEDHungaryEST. 2021
coolify.ioVisit
OPEN SOURCE

Logseq

A privacy-first, open-source knowledge graph

BOOTSTRAPPEDSingaporeEST. 2020
logseq.comVisit
OPEN SOURCE

PocketBase

Open source backend in 1 file

BOOTSTRAPPEDBulgariaEST. 2022
pocketbase.ioVisit
OPEN SOURCE

Anytype

A peer-to-peer, local-first knowledge OS

BOOTSTRAPPEDGermanyEST. 2019
anytype.ioVisit
OPEN SOURCE

Joplin

Open source notes and to-do app

BOOTSTRAPPEDUKEST. 2017
joplinapp.orgVisit
OPEN SOURCE

Standard Notes

Encrypted, open-source notes for life

BOOTSTRAPPEDUSAEST. 2017
standardnotes.comVisit
OPEN SOURCE

GoatCounter

Easy, privacy-friendly web analytics

BOOTSTRAPPEDNetherlandsEST. 2019
goatcounter.comVisit
OPEN SOURCE

Lemmy

A federated link-sharing platform

BOOTSTRAPPEDCanadaEST. 2019
join-lemmy.orgVisit
OPEN SOURCE

CapRover

Build your own PaaS in minutes

BOOTSTRAPPEDCanadaEST. 2018
caprover.comVisit
OPEN SOURCE

NetNewsWire

Free and open source RSS reader for Mac and iOS

BOOTSTRAPPEDUSAEST. 2002
netnewswire.comVisit
OPEN SOURCE

Vue Storefront

Open source storefront for headless commerce

VC FUNDEDPolandEST. 2017
vuestorefront.ioVisit
OPEN SOURCE

DocuSeal

Open source document signing

BOOTSTRAPPEDIrelandEST. 2023
docuseal.comVisit
OPEN SOURCE

Dokku

Docker-powered open source mini-Heroku

BOOTSTRAPPEDUSAEST. 2013
dokku.comVisit
OPEN SOURCE

Notesnook

End-to-end encrypted notes alternative to Evernote

BOOTSTRAPPEDPakistanEST. 2020
notesnook.comVisit
OPEN SOURCE

Cloudron

Self-host web apps on your own server

BOOTSTRAPPEDGermanyEST. 2014
cloudron.ioVisit
OPEN SOURCE

Grafana

The open observability platform

VC FUNDEDUSAEST. 2014
grafana.comVisit
OPEN SOURCE

Strapi

The leading open-source headless CMS

VC FUNDEDFranceEST. 2015
strapi.ioVisit
OPEN SOURCE

Open WebUI

ChatGPT-style UI for any LLM

VC FUNDEDUSAEST. 2023
openwebui.comVisit
OPEN SOURCE

ClickHouse

The fastest OLAP database in the world

VC FUNDEDUSAEST. 2021
clickhouse.comVisit
OPEN SOURCE

Excalidraw

Virtual whiteboard for sketching hand-drawn diagrams

VC FUNDEDUSAEST. 2020
excalidraw.comVisit
OPEN SOURCE

CockroachDB

Distributed SQL that survives anything

VC FUNDEDUSAEST. 2015
cockroachlabs.comVisit
OPEN SOURCE

Immich

Self-hosted Google Photos replacement

BOOTSTRAPUSAEST. 2022
immich.appVisit
OPEN SOURCE

Traefik

The cloud-native application proxy

VC FUNDEDFranceEST. 2015
traefik.ioVisit
OPEN SOURCE

Uptime Kuma

Self-hosted monitoring tool like UptimeRobot

BOOTSTRAPHong KongEST. 2021
uptime.kuma.petVisit
OPEN SOURCE

MinIO

High-performance S3-compatible object storage

VC FUNDEDUSAEST. 2014
min.ioVisit
OPEN SOURCE

AppFlowy

Open source Notion alternative

VC FUNDEDUSAEST. 2021
appflowy.ioVisit
OPEN SOURCE

Mattermost

Open source Slack alternative for developers

VC FUNDEDUSAEST. 2015
mattermost.comVisit
OPEN SOURCE

LobeChat

Modern open source ChatGPT UI framework

BOOTSTRAPChinaEST. 2023
lobechat.comVisit
OPEN SOURCE

Portainer

Container management made simple

VC FUNDEDNew ZealandEST. 2016
portainer.ioVisit
OPEN SOURCE

Mermaid Chart

Diagrams and charts as code

VC FUNDEDSwedenEST. 2020
mermaid.js.orgVisit
OPEN SOURCE

Medusa

Building blocks for digital commerce

VC FUNDEDDenmarkEST. 2019
medusajs.comVisit
OPEN SOURCE

Stirling PDF

Self-hosted PDF manipulation toolkit

BOOTSTRAPUKEST. 2023
stirlingtools.comVisit
OPEN SOURCE

TimescaleDB

Time-series SQL built on Postgres

VC FUNDEDUSAEST. 2017
timescale.comVisit
OPEN SOURCE

Gitea

Painless self-hosted all-in-one software development

BOOTSTRAPUSAEST. 2016
gitea.comVisit
OPEN SOURCE

Trivy

All-in-one open source security scanner

VC FUNDEDUSAEST. 2019
trivy.devVisit
OPEN SOURCE

Langflow

Visual framework for building multi-agent AI apps

VC FUNDEDUSAEST. 2023
langflow.orgVisit
OPEN SOURCE

LiteLLM

Call 100+ LLMs with one interface

VC FUNDEDUSAEST. 2023
litellm.aiVisit
OPEN SOURCE

SurrealDB

The ultimate multi-model database

VC FUNDEDUKEST. 2021
surrealdb.comVisit
OPEN SOURCE

Outline

Fast, collaborative, wiki-style knowledge base

VC FUNDEDUSAEST. 2017
getoutline.comVisit
OPEN SOURCE

Maybe Finance

Open source personal finance and wealth management

BOOTSTRAPUSAEST. 2021
maybe.coVisit
OPEN SOURCE

Nuclei

Fast and customizable vulnerability scanner

VC FUNDEDIndiaEST. 2020
projectdiscovery.ioVisit
OPEN SOURCE

Flowise

Drag-and-drop UI to build LLM flows

VC FUNDEDSingaporeEST. 2023
flowiseai.comVisit
OPEN SOURCE

Bruno

Open source IDE for exploring APIs

BOOTSTRAPIndiaEST. 2022
usebruno.comVisit
OPEN SOURCE

Paperless-ngx

Document management that feels magical

BOOTSTRAPGlobalEST. 2021
docs.paperless-ngx.comVisit
OPEN SOURCE

Unleash

The enterprise open source feature management solution

VC FUNDEDNorwayEST. 2014
getunleash.ioVisit
OPEN SOURCE

Zulip

Organized team chat that does not interrupt you

VC FUNDEDUSAEST. 2012
zulip.comVisit
OPEN SOURCE

Mautic

Open source marketing automation platform

BOOTSTRAPUSAEST. 2014
mautic.orgVisit
OPEN SOURCE

OpenBB

Open source investment research terminal

VC FUNDEDUSAEST. 2021
openbb.coVisit
OPEN SOURCE

PhotoPrism

AI-powered photo manager with private cloud

BOOTSTRAPGermanyEST. 2018
photoprism.appVisit
OPEN SOURCE

tldraw

A tiny little drawing app and SDK

VC FUNDEDUKEST. 2021
tldraw.comVisit
OPEN SOURCE

EdgeDB

A next-generation relational database

VC FUNDEDUSAEST. 2019
edgedb.comVisit
OPEN SOURCE

Saleor

Open source GraphQL-first e-commerce platform

VC FUNDEDPolandEST. 2012
saleor.ioVisit
OPEN SOURCE

Continue

Open source AI code assistant for any LLM

VC FUNDEDUSAEST. 2023
continue.devVisit
OPEN SOURCE

Ory

Cloud native identity and access management

VC FUNDEDGermanyEST. 2019
ory.shVisit
OPEN SOURCE

GrowthBook

Open source feature flagging and A/B testing

VC FUNDEDUSAEST. 2020
growthbook.ioVisit
OPEN SOURCE

Monica

Personal CRM to remember your relationships

BOOTSTRAPFranceEST. 2017
monicahq.comVisit
OPEN SOURCE

Actual Budget

Local-first personal budgeting app

BOOTSTRAPUSAEST. 2019
actualbudget.orgVisit
OPEN SOURCE

LanceDB

Multimodal vector database for AI

VC FUNDEDUSAEST. 2022
lancedb.comVisit
OPEN SOURCE

Authentik

Open source identity provider that just works

VC FUNDEDUSAEST. 2020
goauthentik.ioVisit
OPEN SOURCE

Grist

Modern relational spreadsheet with database power

VC FUNDEDUSAEST. 2019
getgrist.comVisit
OPEN SOURCE

Huly

All-in-one project management platform

VC FUNDEDUSAEST. 2023
huly.ioVisit
OPEN SOURCE

Listmonk

Self-hosted newsletter and mailing list manager

BOOTSTRAPIndiaEST. 2019
listmonk.appVisit
OPEN SOURCE

SuperTokens

Open source authentication that is 10x easier

VC FUNDEDUSAEST. 2020
supertokens.comVisit
OPEN SOURCE

Screenpipe

Open source AI-powered screen and audio recorder

VC FUNDEDFranceEST. 2024
screenpi.peVisit
OPEN SOURCE

OpenMetadata

Open standard for metadata and data discovery

VC FUNDEDUSAEST. 2021
open-metadata.orgVisit
OPEN SOURCE

Flagsmith

Feature flags and remote config for any platform

VC FUNDEDUKEST. 2018
flagsmith.comVisit
OPEN SOURCE

Headscale

Open source self-hosted Tailscale control server

BOOTSTRAPSwedenEST. 2021
headscale.netVisit
OPEN SOURCE

Postal

Full-featured open source mail delivery server

BOOTSTRAPUKEST. 2017
postalserver.ioVisit
OPEN SOURCE

Taiga

Free open source agile project management tool

BOOTSTRAPSpainEST. 2014
taiga.ioVisit
OPEN SOURCE

Bytebase

Database DevOps and CI/CD for teams

VC FUNDEDHong KongEST. 2021
bytebase.comVisit
OPEN SOURCE

RisingWave

Streaming SQL for real-time analytics

VC FUNDEDUSAEST. 2021
risingwave.comVisit
OPEN SOURCE

DeepEval

The open source LLM evaluation framework

VC FUNDEDUSAEST. 2023
deepeval.comVisit
OPEN SOURCE

OpenObserve

Open source observability with 140x lower storage costs

VC FUNDEDUSAEST. 2023
openobserve.aiVisit
OPEN SOURCE

KeystoneJS

The superpowered Node.js headless CMS

BOOTSTRAPAustraliaEST. 2018
keystonejs.comVisit
OPEN SOURCE

Composio

Integration platform for AI agents

VC FUNDEDUSAEST. 2024
composio.ioVisit
OPEN SOURCE

Steampipe

SQL for cloud APIs and infrastructure

VC FUNDEDUSAEST. 2021
steampipe.ioVisit
OPEN SOURCE

OpenReplay

Open source session replay and debugging suite

VC FUNDEDUSAEST. 2021
openreplay.comVisit
OPEN SOURCE

Memos

Lightweight, self-hosted memo hub

BOOTSTRAPChinaEST. 2021
usememos.comVisit
OPEN SOURCE

Zitadel

Identity infrastructure for your next project

VC FUNDEDSwitzerlandEST. 2019
zitadel.comVisit
OPEN SOURCE

NetBird

Zero-trust networking built on WireGuard

VC FUNDEDGermanyEST. 2021
netbird.ioVisit
OPEN SOURCE

Caido

A lightweight web security auditing toolkit

VC FUNDEDCanadaEST. 2022
caido.ioVisit
OPEN SOURCE

Plandex

Open source AI coding agent for large projects

BOOTSTRAPUSAEST. 2023
plandex.aiVisit
OPEN SOURCE

Garden

Dev environments and CI/CD for Kubernetes teams

VC FUNDEDDenmarkEST. 2018
garden.ioVisit
OPEN SOURCE

Docmost

Open source Confluence and Notion alternative

BOOTSTRAPUSAEST. 2024
docmost.comVisit
OPEN SOURCE

TinaCMS

Visual editing for your Git-backed website

VC FUNDEDCanadaEST. 2019
tina.ioVisit
OPEN SOURCE

OneUptime

Open source observability and on-call platform

VC FUNDEDUSAEST. 2020
oneuptime.comVisit
OPEN SOURCE

Opik

Open source LLM evaluation and tracing

VC FUNDEDUSAEST. 2024
comet.comVisit
OPEN SOURCE

Firezone

Open source WireGuard-based VPN and access gateway

VC FUNDEDUSAEST. 2021
firezone.devVisit
OPEN SOURCE

Vendure

A headless GraphQL e-commerce framework

BOOTSTRAPUKEST. 2019
vendure.ioVisit
OPEN SOURCE

HyperDX

Open source observability platform

VC FUNDEDUSAEST. 2022
hyperdx.ioVisit
OPEN SOURCE

Mathesar

Database UI as intuitive as a spreadsheet

BOOTSTRAPUSAEST. 2021
mathesar.orgVisit
OPEN SOURCE

SuperAgent

Open source AI agent platform

VC FUNDEDUSAEST. 2023
superagent.shVisit
OPEN SOURCE

Rallly

Open source scheduling and meeting polls

BOOTSTRAPSingaporeEST. 2021
rallly.coVisit
OPEN SOURCE

Flipt

Enterprise-ready, open source feature management

VC FUNDEDUSAEST. 2019
flipt.ioVisit
OPEN SOURCE

DevPod

Open source dev containers on any infrastructure

BOOTSTRAPGermanyEST. 2023
devpod.shVisit
OPEN SOURCE

BoxyHQ

Enterprise SSO and directory sync in minutes

VC FUNDEDUKEST. 2021
boxyhq.comVisit
OPEN SOURCE

Vikunja

The open source to-do app

BOOTSTRAPGermanyEST. 2018
vikunja.ioVisit
OPEN SOURCE

GlitchTip

Open source error tracking

BOOTSTRAPUSAEST. 2020
glitchtip.comVisit
OPEN SOURCE

Woodpecker CI

Simple yet powerful CI/CD engine with great extensibility

BOOTSTRAPGermanyEST. 2021
woodpecker-ci.orgVisit
OPEN SOURCE

Stalwart

Secure and modern open source mail server

BOOTSTRAPUSAEST. 2022
stalw.artVisit
OPEN SOURCE

Dittofeed

Open source customer engagement platform

VC FUNDEDUSAEST. 2022
dittofeed.comVisit
OPEN SOURCE

Keystatic

Git-based CMS for your code editor and GitHub

BOOTSTRAPAustraliaEST. 2023
keystatic.comVisit
OPEN SOURCE

Leantime

Open source project management for non-project managers

BOOTSTRAPGermanyEST. 2016
leantime.ioVisit
OPEN SOURCE

OpenPanel

Open source analytics for product and marketing teams

BOOTSTRAPSwedenEST. 2024
openpanel.devVisit
OPEN SOURCE

OpenLIT

Open source LLM observability and evaluation

BOOTSTRAPUSAEST. 2024
openlit.ioVisit
OPEN SOURCE

Pangolin

Self-hosted tunneled reverse proxy with auth

BOOTSTRAPUSAEST. 2024
pangolin.fossorial.ioVisit

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