Open source focus

Open Source Alternatives to Closely

29 open source Sales Enablement options similar to Closely, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Every company listed publishes its source: each one carries an open source sector tag and a public GitHub repository.

View all alternatives to Closely →

LibreChat10
AINew York, United States
Open-source, self-hostable AI chatbot UI.
Open source · Self-hostable
Hugging Face76
AINew York, United States$395.2M
Hugging Face is the leading AI community and platform for machine learning collaboration, enabling developers to build, share, and deploy models, datasets, and applications.
Open source · Self-hostable
Gitpod63
Developer ToolsTübingen, Germany$28.0M
Cloud Development Environments for efficient and secure team software development.
Open source · Self-hostable
MariaDB61
DatabaseRedwood City, United States$131.0M
A cloud database company providing a unified platform for transactional, analytical, and AI workloads.
Open source · Self-hostable
Bitwarden57
CybersecuritySanta Barbara, United States$130.0M
Open-source password manager for individuals, teams, and businesses.
Open source · Self-hostable
Akash Network56
DePINSan Francisco, United States$2.0M
Decentralized cloud marketplace for compute resources, leveraging blockchain technology (DePIN).
Open source · Self-hostable
Mozilla Firefox54
InternetSan Francisco, United States$2.3M
Open-source web browser focused on privacy, user control, and an open internet.
Open source · Self-hostable
Ghost53
Publishing PlatformSingapore, Singapore$7.4M
An open-source platform for professional publishers to create, share, and grow a business around their content.
Open source · Self-hostable
Flectra27
Open SourceAhmedabad, India
Open-source ERP and CRM software to streamline business operations and enhance productivity.
Open source · Self-hostable
SuiteCRM26
Customer Relationship ManagementStirling, United Kingdom
Open-source Customer Relationship Management (CRM) application for businesses.
Open source · Self-hostable
PyTorch25
AISan Francisco, United States
An open-source machine learning framework for accelerating AI research and production deployment.
Open source · Self-hostable
Omnivore23
Consumer App
A free and open-source read-it-later service with AI-powered features and integrations.
Open source · Self-hostable
Zotero22
Research ToolsFairfax, United States
Free, open-source personal research assistant for collecting, organizing, citing, and sharing research.
Open source · Self-hostable
ERPNext20
Enterprise SoftwareBangalore, India
Open-source ERP system for small and medium-sized businesses.
Open source · Self-hostable
Cap19
Developer ToolsSan Francisco, United States
Open-source screen recording, editing, and hosting tool with ownership of your data.
Open source · Self-hostable
Dolibarr18
Open Source
Open-source ERP and CRM web suite for businesses of all sizes.
Open source · Self-hostable
I3
i313
Software Development
A highly configurable and efficient tiling window manager for X11.
Open source · Self-hostable
TensorFlow10
AIMountain View, United States
An open-source machine learning platform for building and deploying AI applications.
Open source · Self-hostable
EU
Euro-Office10
SoftwareEurope
A sovereign, open-source office suite for European enterprises and public administrations.
Open source · Self-hostable
EU
Eurostack10
SoftwareEurope
A European enterprise contributing to the development of sovereign digital infrastructure.
Open source · Self-hostable
Snipit Good8
Developer Tools
Free and open-source Windows capture tool for instant snips, MP4 recordings, and private share links.
Open source
Naps2 Software8
Document Management
Free and open-source scanning software for Windows, Mac, and Linux, simplifying document digitization.
Open source · Self-hostable
Ajthinking7
Open Source
Code, AI, GIS, maps, open-source tooling, city planning, and marketing automation.
Open source
Fractask7
Open Source
Open-source task tree for humans and AI, built around the Fractask method.
Open source · Self-hostable
OP
OpenWorker7
Agentic AI
OpenWorker is an open-source desktop AI agent that runs locally, integrates with everyday tools, and delivers finished outcomes by breaking down tasks.
Open source
Orcaforge7
3D Printing
An open-source fork of OrcaSlicer with a built-in plugin marketplace for 3D printing.
Open source · Self-hostable
Agentic Commerce Protocol (ACP)3
AISan Francisco, United States
Open-source standard enabling secure, programmatic commerce transactions between AI agents and online businesses.
Open source · Self-hostable
Model Context Protocol (MCP)2
AISan Francisco, United States
An open standard for connecting AI assistants to external data sources and tools.
Open source · Self-hostable
Thunderbird
Email Client
Free and open-source email client for managing email, calendars, and contacts.
Open source · Self-hostable

Company	Sector	License	HQ	Funding	Score
LibreChatOpen-source, self-hostable AI chatbot UI.	AI	Open source · Self-hostable	New York, United States	—	10
Hugging FaceHugging Face is the leading AI community and platform for machine learning collaboration, enabling developers to build, share, and deploy models, datasets, and applications.	AI	Open source · Self-hostable	New York, United States	$395.2M	76
GitpodCloud Development Environments for efficient and secure team software development.	Developer Tools	Open source · Self-hostable	Tübingen, Germany	$28.0M	63
MariaDBA cloud database company providing a unified platform for transactional, analytical, and AI workloads.	Database	Open source · Self-hostable	Redwood City, United States	$131.0M	61
BitwardenOpen-source password manager for individuals, teams, and businesses.	Cybersecurity	Open source · Self-hostable	Santa Barbara, United States	$130.0M	57
Akash NetworkDecentralized cloud marketplace for compute resources, leveraging blockchain technology (DePIN).	DePIN	Open source · Self-hostable	San Francisco, United States	$2.0M	56
Mozilla FirefoxOpen-source web browser focused on privacy, user control, and an open internet.	Internet	Open source · Self-hostable	San Francisco, United States	$2.3M	54
GhostAn open-source platform for professional publishers to create, share, and grow a business around their content.	Publishing Platform	Open source · Self-hostable	Singapore, Singapore	$7.4M	53
FlectraOpen-source ERP and CRM software to streamline business operations and enhance productivity.	Open Source	Open source · Self-hostable	Ahmedabad, India	—	27
SuiteCRMOpen-source Customer Relationship Management (CRM) application for businesses.	Customer Relationship Management	Open source · Self-hostable	Stirling, United Kingdom	—	26
PyTorchAn open-source machine learning framework for accelerating AI research and production deployment.	AI	Open source · Self-hostable	San Francisco, United States	—	25
OmnivoreA free and open-source read-it-later service with AI-powered features and integrations.	Consumer App	Open source · Self-hostable	—	—	23
ZoteroFree, open-source personal research assistant for collecting, organizing, citing, and sharing research.	Research Tools	Open source · Self-hostable	Fairfax, United States	—	22
ERPNextOpen-source ERP system for small and medium-sized businesses.	Enterprise Software	Open source · Self-hostable	Bangalore, India	—	20
CapOpen-source screen recording, editing, and hosting tool with ownership of your data.	Developer Tools	Open source · Self-hostable	San Francisco, United States	—	19
DolibarrOpen-source ERP and CRM web suite for businesses of all sizes.	Open Source	Open source · Self-hostable	—	—	18
I3i3A highly configurable and efficient tiling window manager for X11.	Software Development	Open source · Self-hostable	—	—	13
TensorFlowAn open-source machine learning platform for building and deploying AI applications.	AI	Open source · Self-hostable	Mountain View, United States	—	10
EUEuro-OfficeA sovereign, open-source office suite for European enterprises and public administrations.	Software	Open source · Self-hostable	Europe	—	10
EUEurostackA European enterprise contributing to the development of sovereign digital infrastructure.	Software	Open source · Self-hostable	Europe	—	10
Snipit GoodFree and open-source Windows capture tool for instant snips, MP4 recordings, and private share links.	Developer Tools	Open source	—	—	8
Naps2 SoftwareFree and open-source scanning software for Windows, Mac, and Linux, simplifying document digitization.	Document Management	Open source · Self-hostable	—	—	8
AjthinkingCode, AI, GIS, maps, open-source tooling, city planning, and marketing automation.	Open Source	Open source	—	—	7
FractaskOpen-source task tree for humans and AI, built around the Fractask method.	Open Source	Open source · Self-hostable	—	—	7
OPOpenWorkerOpenWorker is an open-source desktop AI agent that runs locally, integrates with everyday tools, and delivers finished outcomes by breaking down tasks.	Agentic AI	Open source	—	—	7
OrcaforgeAn open-source fork of OrcaSlicer with a built-in plugin marketplace for 3D printing.	3D Printing	Open source · Self-hostable	—	—	7
Agentic Commerce Protocol (ACP)Open-source standard enabling secure, programmatic commerce transactions between AI agents and online businesses.	AI	Open source · Self-hostable	San Francisco, United States	—	3
Model Context Protocol (MCP)An open standard for connecting AI assistants to external data sources and tools.	AI	Open source · Self-hostable	San Francisco, United States	—	2
ThunderbirdFree and open-source email client for managing email, calendars, and contacts.	Email Client	Open source · Self-hostable	—	—	—