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	<a href=https://github.com/LAION-AI/Open-Assistant><img src="https://img.shields.io/github/stars/LAION-AI/Open-Assistant?style=flat" width=100/></a>
Leon	getleon.ai	<a href=https://github.com/leon-ai/leon><img src="https://img.shields.io/github/stars/leon-ai/leon?style=flat" width=100/></a>
ChatRWKV	twitter.com/BlinkDL_AI	<a href=https://github.com/BlinkDL/ChatRWKV><img src="https://img.shields.io/github/stars/BlinkDL/ChatRWKV?style=flat" width=100/></a>

AI code completion (Github CoPilot alternatives):

Company	Website	GitHub stars
FauxPilot	github.com/fauxpilot/fauxpilot/wiki	<a href=https://github.com/fauxpilot/fauxpilot><img src="https://img.shields.io/github/stars/fauxpilot/fauxpilot?style=flat" width=100/></a>
YouCompleteMe	ycm-core.github.io/ycmd	<a href=https://github.com/ycm-core/ycmd><img src="https://img.shields.io/github/stars/ycm-core/ycmd?style=flat" width=100/></a>

Team knowledge base (Notion alternatives):

Company	Website	GitHub stars
AppFlowy	appflowy.io	<a href=https://github.com/AppFlowy-IO/AppFlowy><img src="https://img.shields.io/github/stars/AppFlowy-IO/AppFlowy?style=flat" width=100/></a>
AFFiNE	affine.pro	<a href=https://github.com/toeverything/AFFiNE><img src="https://img.shields.io/github/stars/toeverything/AFFiNE?style=flat" width=100/></a>

Internal tools (Retool alternatives):

Company	Website	GitHub stars
Appsmith	appsmith.com	<a href=https://github.com/appsmithorg/appsmith><img src="https://img.shields.io/github/stars/appsmithorg/appsmith?style=flat" width=100/></a>
ToolJet	tooljet.com	<a href=https://github.com/tooljet/tooljet><img src="https://img.shields.io/github/stars/ToolJet/ToolJet?style=flat" width=100/></a>
Budibase	budibase.com	<a href=https://github.com/Budibase/budibase><img src="https://img.shields.io/github/stars/Budibase/budibase?style=flat" width=100/></a>
ILLA	illacloud.com	<a href=https://github.com/illacloud/illa-builder><img src="https://img.shields.io/github/stars/illacloud/illa-builder?style=flat" width=100/></a>
Windmill	windmill.dev	<a href=https://github.com/windmill-labs/windmill><img src="https://img.shields.io/github/stars/windmill-labs/windmill?style=flat" width=100/></a>
Openblocks	openblocks.dev	<a href=https://github.com/openblocks-dev/openblocks><img src="https://img.shields.io/github/stars/openblocks-dev/openblocks?style=flat" width=100/></a>

Web analytics (Google Analytics alternatives):

Company	Website	GitHub stars
Matomo	matomo.org	<a href=https://github.com/matomo-org/matomo><img src="https://img.shields.io/github/stars/matomo-org/matomo?style=flat" width=100/></a>
Umami	umami.is	<a href=https://github.com/umami-software/umami><img src="https://img.shields.io/github/stars/umami-software/umami?style=flat" width=100/></a>
Plausible	plausible.io	<a href=https://github.com/plausible/analytics><img src="https://img.shields.io/github/stars/plausible/analytics?style=flat" width=100/></a>
OpenWebAnalytics	openwebanalytics.com	<a href=https://github.com/Open-Web-Analytics/Open-Web-Analytics><img src="https://img.shields.io/github/stars/Open-Web-Analytics/Open-Web-Analytics?style=flat" width=100/></a>

Note-taking/ Knowledge management (Evernote alternatives):

Company	Website	GitHub stars
Joplin	joplinapp.org	<a href=https://github.com/laurent22/joplin><img src="https://img.shields.io/github/stars/laurent22/joplin?style=flat" width=100/></a>
Logseq	logseq.com	<a href=https://github.com/logseq/logseq><img src="https://img.shields.io/github/stars/logseq/logseq?style=flat" width=100/></a>
SiYuan	b3log.org/siyuan/en	<a href=https://github.com/siyuan-note/siyuan><img src="https://img.shields.io/github/stars/siyuan-note/siyuan?style=flat" width=100/></a>
Notesnook	notesnook.com	<a href=https://github.com/streetwriters/notesnook><img src="https://img.shields.io/github/stars/streetwriters/notesnook?style=flat" width=100/></a>

Company blogs/ newsletters (WordPress alternatives):

Company	Website	GitHub stars
Ghost	ghost.org	<a href=https://github.com/TryGhost/Ghost><img src="https://img.shields.io/github/stars/TryGhost/Ghost?style=flat" width=100/></a>

Blogging platform/ Personal website builder (Medium alternatives):

Company	Website	GitHub stars
WriteFreely	writefreely.org	<a href=https://github.com/writefreely/writefreely><img src="https://img.shields.io/github/stars/writefreely/writefreely?style=flat" width=100/></a>
btw	btw.so	<a href=https://github.com/btw-so/btw><img src="https://img.shields.io/github/stars/btw-so/btw?style=flat" width=100/></a>

Newsletters (ConvertKit alternatives):

Company	Website	GitHub stars
listmonk	listmonk.app	<a href=https://github.com/knadh/listmonk><img src="https://img.shields.io/github/stars/knadh/listmonk?style=flat" width=100/></a>

Static website generator:

Company	Website	GitHub stars
Hugo	gohugo.io	<a href=https://github.com/gohugoio/hugo><img src="https://img.shields.io/github/stars/gohugoio/hugo?style=flat" width=100/></a>
Jekyll	jekyllrb.com	<a href=https://github.com/jekyll/jekyll><img src="https://img.shields.io/github/stars/jekyll/jekyll?style=flat" width=100/></a>
Astro	astro.build	<a href=https://github.com/withastro/astro><img src="https://img.shields.io/github/stars/withastro/astro?style=flat" width=100/></a>
11ty	11ty.dev	<a href=https://github.com/11ty/eleventy><img src="https://img.shields.io/github/stars/11ty/eleventy?style=flat" width=100/></a>
Zola	getzola.org	<a href=https://github.com/getzola/zola><img src="https://img.shields.io/github/stars/getzola/zola?style=flat" width=100/></a>

Website builder (Wix, Strikingly, Webflow alternatives):

Company	Website	GitHub stars
Silex	silex.me	<a href=https://github.com/silexlabs/Silex><img src="https://img.shields.io/github/stars/silexlabs/Silex?style=flat" width=100/></a>
DoTenX	dotenx.com	<a href=https://github.com/dotenx/dotenx><img src="https://img.shields.io/github/stars/dotenx/dotenx?style=flat" width=100/></a>
Webstudio	webstudio.is	<a href=https://github.com/webstudio-is/webstudio><img src="https://img.shields.io/github/stars/webstudio-is/webstudio?style=flat" width=100/></a>

Icons (Noun Project alternatives):

Company	Website	GitHub stars
Font-Awesome	fontawesome.com	<a href=https://github.com/FortAwesome/Font-Awesome><img src="https://img.shields.io/github/stars/FortAwesome/Font-Awesome?style=flat" width=100/></a>
feather	feathericons.com	<a href=https://github.com/feathericons/feather><img src="https://img.shields.io/github/stars/feathericons/feather?style=flat" width=100/></a>
Tabler-Icons	tabler-icons.io	<a href=https://github.com/Remix-Design/RemixIcon><img src="https://img.shields.io/github/stars/tabler/tabler-icons?style=flat" width=100/></a>
Bootstrap	icons.getbootstrap.com	<a href=https://github.com/twbs/icons><img src="https://img.shields.io/github/stars/twbs/icons?style=flat" width=100/></a>
RemixIcon	remixicon.com	<a href=https://github.com/Remix-Design/RemixIcon><img src="https://img.shields.io/github/stars/Remix-Design/RemixIcon?style=flat" width=100/></a>

Collaborative design tool (Figma alternatives):

Company	Website	GitHub stars
Penpot	penpot.app	<a href=https://github.com/penpot/penpot><img src="https://img.shields.io/github/stars/penpot/penpot?style=flat" width=100/></a>
Radix Primitives	radix-ui.com	<a href=https://github.com/radix-ui/primitives><img src="https://img.shields.io/github/stars/radix-ui/primitives?style=flat" width=100/></a>
Plasmic	plasmic.app	<a href=https://github.com/plasmicapp/plasmic><img src="https://img.shields.io/github/stars/plasmicapp/plasmic?style=flat" width=100/></a>
Quant-UX	quant-ux.com	<a href=https://github.com/KlausSchaefers/quant-ux><img src="https://img.shields.io/github/stars/KlausSchaefers/quant-ux?style=flat" width=100/></a>

Online forms (Typeform alternatives):

Company	Website	GitHub stars
Formbricks	formbricks.com	<a href=https://github.com/formbricks/formbricks><img src="https://img.shields.io/github/stars/formbricks/formbricks?style=flat" width=100/></a>

Session replay and analytics (Fullstory alternatives):

Company	Website	GitHub stars
highlight	highlight.io	<a href=https://github.com/highlight/highlight><img src="https://img.shields.io/github/stars/highlight/highlight?style=flat" width=100/></a>

Content Management System/ CMS (Contentful alternatives):

Company	Website	GitHub stars
Strapi	strapi.io	<a href=https://github.com/strapi/strapi><img src="https://img.shields.io/github/stars/strapi/strapi?style=flat" width=100/></a>
Payload	payloadcms.com	<a href=https://github.com/payloadcms/payload><img src="https://img.shields.io/github/stars/payloadcms/payload?style=flat" width=100/></a>
Webiny	webiny.com	<a href=https://github.com/webiny/webiny-js><img src="https://img.shields.io/github/stars/webiny/webiny-js?style=flat" width=100/></a>

Log management (Papertrail alternatives):

Company	Website	GitHub stars
Graylog	graylog.org	<a href=https://github.com/Graylog2/graylog2-server><img src="https://img.shields.io/github/stars/Graylog2/graylog2-server?style=flat"