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Open source alternatives

List of open-source alternatives to everyday SaaS products.

Artificial intelligence chatbot/ LLM (ChatGPT alternatives):

Company Website GitHub stars
OpenAssistant open-assistant.io
Leon getleon.ai
ChatRWKV twitter.com/BlinkDL_AI

AI code completion (Github CoPilot alternatives):

Company Website GitHub stars
FauxPilot github.com/fauxpilot/fauxpilot/wiki
YouCompleteMe ycm-core.github.io/ycmd

Team knowledge base (Notion alternatives):

Company Website GitHub stars
AppFlowy appflowy.io
AFFiNE affine.pro
docmost docmost.com

Internal tools (Retool alternatives):

Company Website GitHub stars
Appsmith appsmith.com
ToolJet tooljet.com
Budibase budibase.com
ILLA illacloud.com
Windmill windmill.dev
Openblocks openblocks.dev
DashPress dashpress.io

Web analytics (Google Analytics alternatives):

Company Website GitHub stars
Matomo matomo.org
Umami umami.is
Plausible plausible.io
OpenWebAnalytics openwebanalytics.com

Note-taking/ Knowledge management (Evernote alternatives):

Company Website GitHub stars
Joplin joplinapp.org
Logseq logseq.com
SiYuan b3log.org/siyuan/en
Notesnook notesnook.com

Company blogs/ newsletters (WordPress alternatives):

Company Website GitHub stars
Ghost ghost.org

Blogging platform/ Personal website builder (Medium alternatives):

Company Website GitHub stars
WriteFreely writefreely.org
btw btw.so

Newsletters (ConvertKit alternatives):

Company Website GitHub stars
listmonk listmonk.app

Static website generator:

Company Website GitHub stars
Hugo gohugo.io
Jekyll jekyllrb.com
Astro astro.build
11ty 11ty.dev
Zola getzola.org

Website builder (Wix, Strikingly, Webflow alternatives):

Company Website GitHub stars
Silex silex.me
DoTenX dotenx.com
Webstudio webstudio.is

Icons (Noun Project alternatives):

Company Website GitHub stars
Font-Awesome fontawesome.com
feather feathericons.com
Tabler-Icons tabler-icons.io
Bootstrap icons.getbootstrap.com
RemixIcon remixicon.com

Collaborative design tool (Figma alternatives):

Company Website GitHub stars
Penpot penpot.app
Radix Primitives radix-ui.com
Plasmic plasmic.app
Quant-UX quant-ux.com

Online forms (Typeform alternatives):

Company Website GitHub stars
Formbricks formbricks.com

Session replay and analytics (Fullstory alternatives):

Company Website GitHub stars
highlight highlight.io

Content Management System/ CMS (Contentful alternatives):

Company Website GitHub stars
Strapi strapi.io
Payload payloadcms.com
Webiny webiny.com

Log management (Papertrail alternatives):

Company Website GitHub stars
Graylog graylog.org

To-do app:

Company Website GitHub stars
super-productivity super-productivity.com

Community management:

Company Website GitHub stars
Discourse discourse.org
Flarum flarum.org
crowd.dev crowd.dev

Kanban board (Trello alternatives):

Company Website GitHub stars
WeKan wekan.github.io
Focalboard focalboard.com
Kanboard kanboard.org
Planka planka.app

Social network/ Micro-blogging (Twitter alternatives):

Company Website GitHub stars
Mastodon joinmastodon.org
HumHub humhub.com
Elgg elgg.org

Ticket management (Zendesk, Freshdesk alternatives):

Company Website GitHub stars
Zammad zammad.com
Peppermint peppermint.sh

Scheduling tool (Calendly alternatives):

Company Website GitHub stars
Cal.com cal.com

Smart spreadsheet (Airtable alternatives):

Company Website GitHub stars
NocoDB nocodb.com
Luckysheet dream-num.github.io/LuckysheetDocs
APITable apitable.com
Grist getgrist.com

Team communication (Slack, Discord alternatives):

Company Website GitHub stars
Rocket.chat rocket.chat
Mattermost mattermost.com
Zulip zulip.com
Element element.io
Spacebar spacebar.chat
RelatedChat relatedcode.com

Live chat (Intercom alternatives):

Company Website GitHub stars
Chatwoot chatwoot.com

User authentication (Auth0 alternatives):

Company Website GitHub stars
Keycloak keycloak.org
SuperTokens supertokens.com
Logto logto.io

Digital search experience (Algolia alternatives):

Company Website GitHub stars
Typesense typesense.org

Backend-as-a-Service (Firebase alternatives):

Company Website GitHub stars
Supabase supabase.com
Appwrite appwrite.io
Nhost nhost.io

Customer data platform/ CDP (Segment alternatives):

Company Website GitHub stars
Jitsu jitsu.com

Link shortener (Bitly alternatives):

Company Website GitHub stars
Dub dub.sh

Online store builder (Shopify alternatives):

Company Website GitHub stars
Medusa medusajs.com
Vue Storefront vuestorefront.io
Sylius sylius.com
Presta prestashop-project.org
Bagisto bagisto.com
Litekart litekart.in

Password manager (1Password alternatives):

Company Website GitHub stars
Bitwarden bitwarden.com
Passbolt passbolt.com
Padloc padloc.app

Email delivery (Mailgun, SendGrid alternatives):

Company Website GitHub stars
Postal docs.postalserver.io

Usage-based billing (Stripe, Chargebee alternatives):

Company Website GitHub stars
Lago getlago.com

File uploader:

Company Website GitHub stars
Uppy uppy.io

Notification infrastructure:

Company Website GitHub stars
Novu novu.co
ntfy ntfy.sh
Gotify gotify.net
Apprise hub.docker.com/r/caronc/apprise

API development (Postman alternatives):

Company Website GitHub stars
hoppscotch hoppscotch.io
Insomnia insomnia.rest
Firecamp firecamp.dev

Programmatic videos:

Company Website GitHub stars
Remotion remotion.dev

Data warehouse (Snowflake alternatives):

Company Website GitHub stars
Databend databend.rs

Annotation:

Company Website GitHub stars
doccano doccano.herokuapp.com

Feature management/ Feature flag:

Company Website GitHub stars
Unleash getunleash.io
Flagsmith flagsmith.com
Flagr openflagr.github.io/flagr/
FeatBit featbit.co

Product analytics (Mixpanel, Amptitude alternatives):

Company Website GitHub stars
PostHog posthog.com

Video conferencing (Google Meet, Skype alternatives):

Company Website GitHub stars
Jitsi Meet jitsi.org
Element Call call.element.io

Personal cloud (Dropbox alternatives):

Company Website GitHub stars
Nextcloud nextcloud.com

Business intelligence (Tableau, Looker, Power BI alternatives):

Company Website GitHub stars
Metabase metabase.com

Platform-as-a-Service/ PaaS (Heroku, Netlify, Vercel alternatives):

Company Website GitHub stars
Dokku dokku.com
CapRover caprover.com
Coolify coolify.io
Kubero kubero.dev

Unified Communication Platform & Telephony API (Twilio alternatives):

Company Website GitHub stars
Fonoster fonoster.com

Bug tracking/ Error tracking (Sentry alternatives):

Company Website GitHub stars
Bugzilla bugzilla.org

Invoicing:

Company Website GitHub stars
Invoice Ninja invoiceninja.com
Crater crater.financial
SolidInvoice solidinvoice.co

Graph database:

Company Website GitHub stars
JanusGraph janusgraph.org
Memgraph memgraph.com

Vector database:

Company Website GitHub stars
Milvus milvus.io
Weaviate weaviate.io
activeloopai/deeplake activeloop.ai
CozoDB cozodb.org

Time-series database:

Company Website GitHub stars
Prometheus prometheus.io
QuestDB questdb.io
OpenTSDB opentsdb.net
KairosDB kairosdb.github.io

Document signing (DocuSign alternatives):

Company Website GitHub stars
Documenso documenso.com

Workflow automation (Zapier alternatives):

Company Website GitHub stars
Automatisch automatisch.io
Activepieces activepieces.com

Project Management (Asana, JIRA alternatives):

Company Website GitHub stars
Plane Plane.so
Leantime leantime.io

Time Tracking (Toggl, Clockify alternatives)

Company Website GitHub stars
Kimai www.kimai.org
solidtime solidtime.io

Personal finance (Empower Personal Wealth alternatives):

Company Website GitHub stars
Ghostfolio Ghostfol.io
Firefly III firefly-iii.org

CRM (Salesforce, Hubspot alternatives):

Company Website GitHub stars
Twenty Twenty.com

Integration Platform (Tray.io, Merge.dev alternatives)

Company Website GitHub stars
Revert revert.dev

Online Survey Platform (SurveyMonkey, Qualtrics alternatives)

Company Website GitHub stars
LimeSurvey limesurvey.org

Criteria

  1. Product is open-source and repo is actively being maintained.
  2. It is a product (not a library) and ideally has a popular closed-source alternative.
  3. Repo has at least 100 stars on GitHub.

Contributing

Looking for contributors to add missing startups/ projects. Please submit a PR (the products are listed in descending order by number of GitHub stars) or feel free to DM @deeptivchopra.

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List of open-source alternatives to everyday SaaS products.

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