Dev tools · alternatives · 2026

24 alternatives to Kairos

Facial recognition & mood detection API

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Kairos launched in 2014; newer entries below may have overtaken it.

1. 1
   Kairos▲7

   Face recognition, emotional analysis

   2017 · kairos.com · its alternatives →

2. 2
   Smart People Should Build Things - Brian Brackeen, CEO of Kairos▲72

   On using facial recognition technology to help brands

   2016 · its alternatives →

3. 3
   Moodstocks▲71

   Supersonic image recognition for your mobile apps

   2014 · developers.google.com · its alternatives →

4. 4
   Clarifai▲103

   Image recognition API

   2014 · its alternatives →

5. 5
   TrueFace.AI▲303

   A facial recognition API with picture attack detection

   2017 · trueface.ai · its alternatives →

6. 6
   ZingTouch▲178

   A JavaScript gesture detection library

   2016 · zingchart.github.io · its alternatives →

7. 7
   Tone Analyzer by IBM▲183

   Linguistic analysis to detect emotional tones

   2015 · its alternatives →

8. 8
   Moodsnap 1.5▲63

   Now with Mood Match, a photo/music matching game

   2014 · apps.apple.com · its alternatives →

9. 9
   bipio▲76

   A Personal API for Email and Web Apps

   2014 · bip.io · its alternatives →

10. 10
    CloudSight▲128

    Image Recognition API

    2015 · its alternatives →

11. 11
    DeepFace – A lightweight deep face recognition library for Python▲257

    DeepFace is a leading open-source library for facial recognition and facial attribute analysis, and the de facto standard in Python. It wraps multiple state-of-the-art models that have reached — and even surpassed — human-level accuracy in recognizing faces. By the numbers (as of early 2025): 15,000+ stars on GitHub; ~4 million installations via pip; 800+ citations in academic papers Whether you're building a cutting-edge AI project or simply exploring facial recognition, DeepFace makes advanced capabilities accessible with just a few lines of code.

    2025 · github.com · its alternatives →

12. 12
    PredictionIO▲172

    Open source machine learning to predict/learn user behavior

    2014 · prediction.io · its alternatives →

13. 13
    Kissmetrics - People Search▲90

    Super powerful behavioral segmentation

    2016 · neilpatel.com · its alternatives →

14. 14
    GradientDaze▲186

    Gesture based gradients never felt so good

    2017 · its alternatives →

15. 15
    Shade▲131

    Gradient explorer

    2015 · jxnblk.io · its alternatives →

16. 16AF
    A Face-Detection Library in 200 Lines of JavaScript▲36

    2018 · tkv.io · its alternatives →

17. 17
    mocap4face▲144

    A free SDK for realtime facial motion capture

    2021 · github.com · its alternatives →

18. 18
    Umoove▲70

    Face and eye tracking for mobile devices/gaming

    2014 · umoove.me · its alternatives →

19. 19
    Facesoft▲127

    The world's most accurate face recognition algorithm

    2019 · uzb.cn.com · its alternatives →

20. 20
    Cognitive Apps API▲133

    Add mental health analytics to your app

    2021 · its alternatives →

21. 21
    gesture.ai▲116

    Easy to use gesture recognition technology and SDK

    2016 · gesture.ai · its alternatives →

22. 22
    JuliusJS▲94

    A speech recognition library for the web

    2014 · github.com · its alternatives →

23. 23
    Emotion Recognition by Microsoft▲11

    Identify emotions communicated by the facial expressions.

    2015 · its alternatives →

24. 24
    Javascript face recognition game using TensorFlow▲62

    :cat: Take kemono pictures and lines up 3, then tanoshii - icoxfog417/kemono_puyo

    2017 · github.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →