Open source

Collaboration

8 listings are ranked by release freshness and adoption until verified reviews arrive; then review quality, volume and vendor responsiveness join the score. Open any row to see its receipt. See the formula

  • 7 fresh released in the last 90 days
  • 0 aging no release for 90 to 179 days
  • 1 stale no release for 180 days or more

8 ranked listings

  1. Discourse

    Modern open source discussion platform built for the next decade of the Internet.

    Discourse No reviews yet Open source
    Updated 25 days ago
    1 89.0 =
    Show how this rank is calculated
    Rank receipt: Discourse
    #57 overall · #1 in category
    89.0/100
    1. Release freshness +50.0 100.0 × 50%
    2. Adoption signals +39.0 78.0 × 50%
    Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
  2. Rocket.Chat

    Communications platform that securely connects teams, customers, and partners via chat, voice and video.

    Rocket.Chat No reviews yet Open source
    Updated 10 days ago
    2 88.8 =
    Show how this rank is calculated
    Rank receipt: Rocket.Chat
    #60 overall · #2 in category
    88.8/100
    1. Release freshness +50.0 100.0 × 50%
    2. Adoption signals +38.9 77.7 × 50%
    Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
  3. Mattermost

    Self-hosted team messaging platform with channels, threads, integrations and playbooks.

    Mattermost No reviews yet Open source
    Updated 3 days ago
    3 88.2 =
    Show how this rank is calculated
    Rank receipt: Mattermost
    #66 overall · #3 in category
    88.2/100
    1. Release freshness +50.0 100.0 × 50%
    2. Adoption signals +38.2 76.5 × 50%
    Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
  4. Nextcloud Server

    Self-hosted file sync and sharing platform with calendar, contacts and collaboration apps.

    Nextcloud No reviews yet Open source
    Updated 4 days ago
    4 88.0 =
    Show how this rank is calculated
    Rank receipt: Nextcloud Server
    #71 overall · #4 in category
    88.0/100
    1. Release freshness +50.0 100.0 × 50%
    2. Adoption signals +38.0 76.1 × 50%
    Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
  5. Jitsi Meet

    WebRTC video conferencing application that can be self-hosted and used from the browser or mobile apps.

    Jitsi No reviews yet Open source
    Updated 1 day ago
    5 87.3 =
    Show how this rank is calculated
    Rank receipt: Jitsi Meet
    #82 overall · #5 in category
    87.3/100
    1. Release freshness +50.0 100.0 × 50%
    2. Adoption signals +37.3 74.6 × 50%
    Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
  6. Zulip

    Organized team chat app with unique email-style threading to keep conversations on topic.

    Zulip No reviews yet Open source
    Updated 40 days ago
    6 85.3 =
    Show how this rank is calculated
    Rank receipt: Zulip
    #102 overall · #6 in category
    85.3/100
    1. Release freshness +48.5 97.0 × 50%
    2. Adoption signals +36.8 73.6 × 50%
    Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
  7. Synapse

    Matrix homeserver written in Python for hosting decentralized, federated chat.

    Element No reviews yet Open source
    Updated 4 days ago
    7 80.5 =
    Show how this rank is calculated
    Rank receipt: Synapse
    #133 overall · #7 in category
    80.5/100
    1. Release freshness +50.0 100.0 × 50%
    2. Adoption signals +30.6 61.1 × 50%
    Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
  8. Cal.com

    Scheduling infrastructure for everyone, open source alternative to Calendly with granular control.

    Cal.com No reviews yet Open source
    Stale: 202 days without a release
    8 63.4 =
    Show how this rank is calculated
    Rank receipt: Cal.com
    #157 overall · #8 in category
    63.4/100
    1. Release freshness +24.4 48.7 × 50%
    2. Adoption signals +39.0 78.1 × 50%
    Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula