awesome-oss-alternatives

Awesome open-source alternatives to SaaS

Awesome list of open-source startup alternatives to established SaaS products. Maintained by folks at

Also checkout our ROSS index: fastest-growing open-source startups, every quarter.

Criteria

Open-source company is added to the list if:

1. Its product is strongly based on an open-source repo
2. It has a well-known closed-source competitor, solving a similar business problem
3. It is a private for-profit company, founded in the last 10 years
4. Its repo has 100+ stars on GitHub

Things change really fast in the startup world, so this list can neither be fully complete, nor 100% up to date.

Don't hesitate to contribute and add new startups. Let's build the most comprehensive list together.

Any questions or suggestions? Feel free to DM project maintainer @garrrikkotua

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Startup List

All startups in the list are sorted by categories and sorted in alphabetical order. If you click on the stars badge you will get to the product's repo. Have a good search!

Category Company Description GitHub Stars Alternative to API Gateway Apache APISIX Cloud Native API Gateway under the Apache Software Foundation apigee API Platform Firecamp DX first open-source API devtool Postman API Platform Fusio API management platform Postman API Platform Hoppscotch API development ecosystem Postman API Platform Keploy e2e Testing and Data Mocking Smartbear, Newman API Platform Step CI API Testing and Monitoring Checkly, Postman Auth & SSO BoxyHQ Enterprise Readiness made simple Auth0 Auth & SSO Cerbos Granular access control Okta, Auth0 Auth & SSO FusionAuth User authentication and session management framework Okta, Auth0 Auth & SSO Hanko Passkey-first authentication framework Okta, Auth0 Auth & SSO Keycloak User authentication and session management framework Okta, Auth0 Auth & SSO OPAL (Permit.io) Authorization administration framework (Open Policy) Okta, Auth0 Auth & SSO Ory Identity platform Okta, Auth0 Auth & SSO Oso Authorization building framework Okta, Auth0 Auth & SSO Supertokens User authentication and session management framework Okta, Auth0 Auth & SSO Warrant Authorization and access control as a service Okta, Auth0 Auth & SSO Zitadel User authentication and session management framework Okta, Auth0 Backend as a service AceBase Backend server with REST APIs to manage core backend needs Firebase Backend as a service Amplication Backend server with REST and GraphQL APIs to manage core backend needs Firebase Backend as a service Appwrite Backend server with REST APIs to manage core backend needs Firebase Backend as a service CASE Lightweight Backend-as-a-Service with essential features Firebase Backend as a service Encore Backend Development Engine for cloud-based apps, APIs, and distributed systems Firebase Backend as a service Kuzzle Backend server with REST APIs to manage core backend needs Firebase Backend as a service Nhost Backend server with GraphQL Firebase Backend as a service PocketBase Backend server with REST APIs to manage core backend needs Firebase Backend as a service Supabase Backend server with REST APIs to manage core backend needs Firebase Business Intelligence Metabase Business intelligence software Tableau, Power BI, DataStudio Business Intelligence Preset Modern BI platform powered by Apache Superset PowerBI, Tableau, Mode Analytics CMS Builder Drag and drop page builder and CMS Contentful CMS Concrete CMS for teams Contentful CMS Decap CMS Git-based CMS for static site generators Contentful CMS Directus Data platform which wraps any database with an intuitive app Contentful CMS Ghost Headless Node.js publishing platform Medium, Substack CMS Plasmic The headless page builder for singe-page frameworks Contentful CMS Strapi Node.js Headless CMS to build customisable APIs Contentful CMS Sulu Modern Symfony based CMS Contentful CMS Tina Visual editor for React websites Contentful CMS Webiny Enterprise serverless CMS Contentful Cloud Data Warehouse Databend Elastic and Workload-Aware Modern Cloud Data Warehouse Snowflake Cloud Development Environment Gitpod Automated provisioning of cloud development environments with multiple git providers & IDEs Codespaces Cloud Storage Minio S3 compatible object storage Amazon S3 Cloud Storage Storj Decentralized cloud storage Amazon S3 Cloud-Native Application Protection Platform Deepfence ThreatMapper Apache v2, powerful runtime vulnerability and compliance scanner for kubernetes, virtual machines, cloud and serverless. Palo Alto Prisma Communication Fonoster APIs for SMS, voice and video Twilio Communication Novu Components and APIs for email, sms, direct and push Courier, MagicBell, Knock Community Platform crowd.dev Suite of community and data tools built to unlock community-led growth for your organization Orbit, Common Room, Commsor Customer Data Platform Jitsu Fully-scriptable data ingestion engine for modern data teams Segment Customer Data Platform Rudderstack Customer data platform for developers Segment Customer Data Platform Tracardi Customer Data Platform with Consumer Journey automation engine Segment, Zapier Customer Engagement Chaskiq Live chat widget Intercom, Zendesk Customer Engagement Chatwoot Live chat widget Intercom, Zendesk Customer Engagement Papercups Live chat widget Intercom, Zendesk Cybersecurity CloudQuery Assess, audit, and evaluate the configurations of your cloud assets. AWS Config, GCP Cloud Asset Inventory, AWS GuardDuty Cybersecurity [CrowdSec](http://crowdsec.net/