ToolVitals
💬

Communication

Chat, video conferencing, async communication

156 tools across 13 use cases

Team Chat

Team messaging, communities, and async communication tools.

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Open/source-visible picks

Health-first ToolVitals score, then adoption

01
MattermostTop Pick
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..
OSI-approved OSS
39.4k starsActive97
02
Rocket.Chat
The Secure CommsOS™ for mission-critical operations
OSI-approved OSS
46.3k starsActive97
03
Element
Enterprise communication platform
OSI-approved OSS
13.6k starsActive97

1 tool is on Evidence Watch.

13 tools are not scored because comparable open/source-visible evidence is unavailable.

Transactional Messaging

SMS, email, push, and transactional notification APIs.

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Open/source-visible picks

Health-first ToolVitals score, then adoption

01
NodemailerTop Pick
✉️ Send e-mails with Node.JS – easy as cake!
OSI-approved OSS
17.7k starsActive95
02
Plunk
The Open-Source Email Platform
OSI-approved OSS
5.5k starsActive95
03
WPPConnect
WPPConnect is an open source project developed by the JavaScript community with the aim of exporting functions from WhatsApp Web to the node, which can be used to support the creation of any interaction, such as customer service, media sending, intelligence recognition based on phrases artificial and many other things, use your imagination
OSI-approved OSS
3.5k starsActive94

1 tool is on Evidence Watch.

3 tools are not scored because comparable open/source-visible evidence is unavailable.

Email Clients & Webmail

Email clients and webmail interfaces for reading, organizing, and sending email across one or more inboxes.

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Open/source-visible picks

Health-first ToolVitals score, then adoption

01
Inbox ZeroTop Pick
The world's best AI personal assistant for email. Open source app to help you reach inbox zero fast.
OSI-approved OSS
12.8k starsActive97
02
Bulwark Mail
Self-hosted JMAP webmail client for modern mail servers.
OSI-approved OSS
1.3k starsActive97
03
Mailflow
Self-hosted unified webmail client.
OSI-approved OSS
589 starsActive97

1 tool is not scored because comparable open/source-visible evidence is unavailable.

Video Conferencing

Video meetings, conferencing, webinars, and calling tools.

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Open/source-visible picks

Health-first ToolVitals score, then adoption

01
MeetTop Pick
Open source video conferencing app powered by LiveKit. Built with Django and React.
OSI-approved OSS
2.5k starsActive96
02
LiveKit
SFU and SDKs for high-performance, scalable WebRTC
OSI-approved OSS
21.8k starsActive95
03
Jitsi Meet
Jitsi Meet - Secure, Simple and Scalable Video Conferences that you use as a standalone app or embed in your web application.
OSI-approved OSS
30.1k starsActive94

1 tool is not scored because comparable open/source-visible evidence is unavailable.

Telephony & PBX

Phone system software for SIP/VoIP calling, call routing, voicemail, and PBX operations.

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Open/source-visible picks

Health-first ToolVitals score, then adoption

01
KamailioTop Pick
Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms, focusing on flexibility, security and scalability
OSI-approved OSS
3k starsActive96
02
FS PBX
Open-source PBX platform for business telephony and VoIP deployments.
OSI-approved OSS
253 starsActive95
03
dograh
Open-source voice agent platform.
OSI-approved OSS
6k starsActive95

2 tools are not scored because comparable open/source-visible evidence is unavailable.

Self-Hosted Email Server

Self-hosted mail server stacks for deploying and managing SMTP, IMAP, webmail, DNS, and related email infrastructure.

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Open/source-visible picks

Health-first ToolVitals score, then adoption

01
ModoboaTop Pick
Mail hosting made simple
OSI-approved OSS
3.5k starsActive95
02
Mailu
Self-hosted mail server stack packaged as Docker images.
OSI-approved OSS
7.6k starsActive94
03
gromox
Groupware backend supporting mail and calendar protocols.
OSI-approved OSS
268 starsActive94

1 tool is not scored because comparable open/source-visible evidence is unavailable.

Booking & Reservations

Tools for booking shared spaces, resources, rentals, or appointments and managing reservations, availability, and rental workflows.

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Open/source-visible picks

Health-first ToolVitals score, then adoption

01
TymeSlotTop Pick
Open-source meeting scheduling platform.
OSI-approved OSS
242 starsActive93
02
Cal.com
Open-source scheduling infrastructure
Open core
49.4k starsActive72
03
CloudMeet
Open-source Calendly alternative running on Cloudflare's free tier. Meeting scheduler with Google Calendar and Outlook sync.
OSI-approved OSS
552 starsWarning53

1 tool is not scored because comparable open/source-visible evidence is unavailable.

Event Management

Tools for planning and running events, conferences, hackathons, registration, ticketing, CFPs, scheduling, and speaker workflows.

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Open/source-visible picks

Health-first ToolVitals score, then adoption

01
HitobitoTop Pick
Web app for managing complex group hierarchies, members, events, and more.
OSI-approved OSS
484 starsActive93
02
tickets
Minimalist and private ticket sales platform.
OSI-approved OSS
36 starsActive90
03
Togather
Open-source community management and event platform.
OSI-approved OSS
7 starsWarning68

1 tool is not scored because comparable open/source-visible evidence is unavailable.

Email Aliasing & Forwarding

Tools for creating email aliases, masks, and forwarding addresses to protect privacy and route mail to real inboxes.

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Open/source-visible picks

Health-first ToolVitals score, then adoption

01
MailXTop Pick
Audited open-source email aliasing service.
OSI-approved OSS
76 starsActive93
02
Anon.li
Email aliasing and zero-knowledge encrypted file sharing.
OSI-approved OSS
9 starsWarning71
03
AnonAddy
Anonymous email forwarding service.
OSI-approved OSS
4.9k starsWarning54

File Storage & Sharing

Tools for storing, organizing, syncing, and securely sharing files across users or teams.

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Open/source-visible picks

Health-first ToolVitals score, then adoption

01
LocalSendTop Pick
An open-source cross-platform alternative to AirDrop
OSI-approved OSS
95.6k starsActive94

2 tools are not scored because comparable open/source-visible evidence is unavailable.

Email Aliasing & Forwarding

Tools for creating email aliases, masks, and forwarding addresses to protect privacy and route mail to real inboxes.

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Open/source-visible picks

Health-first ToolVitals score, then adoption

01
SimpleLoginTop Pick
The SimpleLogin back-end and web app
OSI-approved OSS
7.1k starsActive91

Temporary Email

Services for creating disposable inboxes and temporary email addresses.

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Open/source-visible picks

Health-first ToolVitals score, then adoption

01
MoEmailTop Pick
Temporary email service.
OSI-approved OSS
2.8k starsCritical31

Learning Management Systems

Platforms for hosting, delivering, and managing online courses, learners, instructors, and course content.

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No scored tools in this use case yet.