Search once across OSI-approved open source, source-available projects, and proprietary products.
Error tracking that speaks the Sentry protocol
GlitchTip accepts events from the official Sentry SDKs, which means adopting it is a DSN change rather than an instrumentation project. Stack traces, breadcrumbs, releases, and issue grouping all work as expected.
Open-source usage metering and billing for AI and API products
OpenMeter is an open-source usage-metering and billing platform for AI and API products, turning CloudEvents usage data into entitlements, Stripe invoices, and credit grants.
Create beautiful images of your code
Ray.so is a free web app that turns source code into styled images with syntax colors, backgrounds, and padding for posts and docs.
Open-source LMS for creating and running online courses.
LearnHouse is an open-source learning management system for creating and running online courses with chapters, activities, quizzes, and certificates.
Open-source user onboarding platform for product tours, checklists, and surveys
Usertour is a self-hostable user onboarding platform for building in-app product tours, checklists, and surveys, positioned as an open-source alternative to Userflow and Appcues.
Open-source drag-and-drop HTML email designer for AWS SES
Sendune is an open-source HTML email designer and AWS SES dashboard for contacts, campaigns, and delivery tracking through your own AWS account.
Self-hosted short links, temporary email, and file storage on your own domain
WR.DO is an open-source platform for short links, temporary email, file storage, and subdomain management on your own domain.
Open-source orchestration for AI workloads across any GPU cloud
dstack is an open-source orchestrator for AI training and inference on GPUs across clouds. Teams declare resources in YAML, and dstack provisions matching capacity.
Open-source streaming SQL engine for real-time analytics
Timeplus Proton is an open-source streaming SQL engine in a single C++ binary that turns Kafka and log streams into real-time analytics with millisecond latency.
Private offline AI chat with on-device LLMs for iPhone and Mac
Fullmoon is a free app that chats with small open language models running entirely on your iPhone, iPad, or Mac, with no account and nothing sent to the cloud.
Open-source cloud platform turning bare metal into VMs and K8s.
Cozystack turns bare-metal servers into a private cloud with virtual machines and managed Kubernetes.
Self-hosted newsletters and transactional email
Notifuse is a self-hosted newsletter and transactional email platform with a visual MJML editor, contact timelines, and a transactional API, free to run.
Open-source infrastructure monitoring with distributed checks and alerting
Icinga is open-source infrastructure monitoring for servers, networks, and services, with distributed checks, alerts, and self-hosting under a GPL licence.
Open-source newsletters, self-hosted or managed
Keila is an open-source newsletter platform with visual campaign editing, contact segmentation, and signup forms, available self-hosted or as managed EU cloud.
Open-source Postgres change data capture for streams and search
Sequin is a self-hosted Postgres change data capture platform that streams row changes to Kafka, queues, and search indexes.
Visual database explorer that turns schemas into searchable ER diagrams
Azimutt is a database exploration tool that renders a live schema as an entity-relationship diagram and lets developers search tables, trace relations, and document what they find.
Self-hosted AI gateway routing LLM traffic through Envoy
Envoy AI Gateway is a self-hosted gateway that routes application traffic to 17 language model providers through one OpenAI-compatible API.
Self-hosted email marketing with campaigns and lists
SendPortal is a self-hosted email marketing app for subscriber lists, campaigns, and delivery reports. It connects to providers such as Amazon SES and SendGrid, and runs standalone or as a Laravel package.
Open-source Android app for tracking TV shows and movies
SeriesGuide is an open-source Android app that tracks TV shows and movies, syncing watched history with Trakt and listing data from TMDb.
Self-hosted file sync and sharing with enterprise compliance controls
ownCloud Infinite Scale is self-hosted file sync and sharing with Spaces, guest accounts, and office integrations for teams that control their own data.
Self-hosted error tracking that works with Sentry SDKs
Bugsink is a self-hosted error tracker that collects exceptions from running apps and shows them in one place with stack traces and context.
Local-first desktop workspace for coding-agent runtimes
Synara is a free, open-source, local-first desktop workspace that hosts coding-agent sessions with projects, terminals, diffs, and Git delivery in one app.
Open source auth with SSO, passkeys, and user management
Authgear is an open source identity platform with login flows, single sign-on, multi-factor authentication, and user management for web and mobile apps.
The proprietary products most often replaced by something in this directory.
Notion
Notion Labs
Documents, databases, and project tracking in one workspace
13 open source alternatives
Google Analytics
Web and product analytics tied to Google's ad stack
12 open source alternatives
Datadog
Datadog
Infrastructure monitoring, logs, and tracing in one platform
10 open source alternatives
Dropbox
Dropbox
File sync and sharing across devices and teams
10 open source alternatives
Slack
Salesforce
Channel based team messaging with a large integration ecosystem
10 open source alternatives
Auth0
Okta
Hosted identity covering login, SSO, and multi-factor
9 open source alternatives
Where the directory is growing fastest this month.
Running and talking to language models, on your own hardware or someone else's.
32 products+14.2%
Frameworks and runtimes for building, orchestrating, and supervising autonomous agents.
73 products+12.4%
Assistants that read a codebase and carry out engineering work from natural language instructions.
26 products+11%
Utilities that sit in the daily loop of writing, testing, and shipping software.
292 products+7.2%
Tools that connect applications and run multi step processes without manual work.
57 products+6.4%
Metrics, logs, traces, and error reporting for systems in production.
60 products+6.1%
774 results