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20 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

20 ranked listings

  1. 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 Linux Web Android iOS
    Updated 48 days ago
    1 91.8 =
    Show how this rank is calculated
    Rank receipt: Jitsi Meet
    #27 overall · #1 in category
    91.8/100
    1. Platform readiness +40.0 100.0 × 40%
    2. Release freshness +33.1 94.6 × 35%
    3. Adoption signals +18.6 74.6 × 25%
    Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
  2. Zulip

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

    Zulip No reviews yet Open source Self-hosted Cloud Web Desktop Mobile
    Updated 87 days ago
    2 81.4 =
    Show how this rank is calculated
    Rank receipt: Zulip
    #94 overall · #2 in category
    81.4/100
    1. Platform readiness +34.0 85.0 × 40%
    2. Release freshness +29.0 83.0 × 35%
    3. Adoption signals +18.4 73.6 × 25%
    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 Linux Web
    Updated 50 days ago
    3 80.0 =
    Show how this rank is calculated
    Rank receipt: Mattermost
    #114 overall · #3 in category
    80.0/100
    1. Platform readiness +28.0 70.0 × 40%
    2. Release freshness +32.9 94.0 × 35%
    3. Adoption signals +19.1 76.5 × 25%
    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 Linux Web
    Updated 51 days ago
    4 79.8 =
    Show how this rank is calculated
    Rank receipt: Nextcloud Server
    #120 overall · #4 in category
    79.8/100
    1. Platform readiness +28.0 70.0 × 40%
    2. Release freshness +32.8 93.7 × 35%
    3. Adoption signals +19.0 76.1 × 25%
    Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
  5. Rocket.Chat

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

    Rocket.Chat No reviews yet Open source Self-hosted Cloud Web Mobile
    Updated 57 days ago
    5 79.6 =
    Show how this rank is calculated
    Rank receipt: Rocket.Chat
    #126 overall · #5 in category
    79.6/100
    1. Platform readiness +28.0 70.0 × 40%
    2. Release freshness +32.2 91.9 × 35%
    3. Adoption signals +19.4 77.7 × 25%
    Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
  6. Synapse

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

    Element No reviews yet Open source Linux API only
    Updated 51 days ago
    6 76.1 =
    Show how this rank is calculated
    Rank receipt: Synapse
    #167 overall · #6 in category
    76.1/100
    1. Platform readiness +28.0 70.0 × 40%
    2. Release freshness +32.8 93.7 × 35%
    3. Adoption signals +15.3 61.1 × 25%
    Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
  7. Discourse

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

    Discourse No reviews yet Open source Self-hosted Cloud Web
    Updated 72 days ago
    7 74.1 =
    Show how this rank is calculated
    Rank receipt: Discourse
    #181 overall · #7 in category
    74.1/100
    1. Platform readiness +24.0 60.0 × 40%
    2. Release freshness +30.6 87.5 × 35%
    3. Adoption signals +19.5 78.0 × 25%
    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 Self-hosted Cloud Web
    Stale: 249 days without a release
    8 55.6 =
    Show how this rank is calculated
    Rank receipt: Cal.com
    #240 overall · #8 in category
    55.6/100
    1. Platform readiness +24.0 60.0 × 40%
    2. Release freshness +12.1 34.6 × 35%
    3. Adoption signals +19.5 78.1 × 25%
    Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
  9. Chanty

    Chanty is a team chat app with unlimited message history, group calls, task boards and file storage for small teams.

    Chanty Inc. No reviews yet Free plan iOS Android macOS Windows Web
    No dated release history published
    9 40.0 =
    Show how this rank is calculated
    Rank receipt: Chanty
    #305 overall · #9 in category
    40.0/100
    1. Platform readiness +40.0 100.0 × 40%
    2. Release freshness +0.0 0.0 × 35%
    3. Adoption signals +0.0 0.0 × 25%
    Data from Advisor (AI agent) Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
  10. Discord

    Voice, video and text communication service for gaming communities, developer groups, study servers and friends.

    Discord Inc. No reviews yet Free plan Web Windows macOS Linux iOS Android
    No dated release history published
    10 40.0 =
    Show how this rank is calculated
    Rank receipt: Discord
    #322 overall · #10 in category
    40.0/100
    1. Platform readiness +40.0 100.0 × 40%
    2. Release freshness +0.0 0.0 × 35%
    3. Adoption signals +0.0 0.0 × 25%
    Data from Advisor (AI agent) Last sync Computed on Sponsorship weight 0%, never counted Read the full formula