Dev tools · alternatives · 2026

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. uPlot.js v1.0 – A fast, small chart for time series, OHLC and bars launched in 2020; newer entries below may have overtaken it.

1. 1
   uPlot.js – An exceptionally fast, tiny time series chart▲260

   📈 A small, fast chart for time series, lines, areas, ohlc & bars - leeoniya/uPlot

   2019 · github.com · its alternatives →

2. 2
   Chart.js 2.0▲440

   Simple, clean & engaging charts for designers & developers.

   2016 · chartjs.org · its alternatives →

3. 3
   A flask app to make dashboards, easily▲302

   :snake: :bar_chart: :chart_with_upwards_trend: Build complex dashboards without any front-end code. Use your own endpoints. JSON config only. Ready to go. - GitHub - christabor/flask_jsondash: :snake: :chart_with_upwards_trend: Build complex dashboards without any front-end code. Use your own endpoi

   2016 · github.com · its alternatives →

4. 4
   Chart.js▲263

   Simple, clean & engaging charts for designers and developers

   2014 · chartjs.org · its alternatives →

5. 5
   NotebookJS▲109

   Scientific computation for JavaScript

   2016 · datazar.com · its alternatives →

6. 6
   Epoch▲95

   A general purpose library for building real-time charts.

   2014 · fastly.github.io · its alternatives →

7. 7
   Vizzu▲225

   Open-source JS library to build animated charts with ease

   2022 · vizzu.io · its alternatives →

8. 8
   Fast 2kB date library alternative to Moment.js with the same API▲122

   ⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API - iamkun/dayjs

   2018 · github.com · its alternatives →

9. 9
   glot.io▲261

   An open source pastebin with runnable snippets and API

   2016 · glot.io · its alternatives →

10. 10
    MetricsGraphics.js▲84

    API for beautiful interactive graphics from time-series data

    2014 · metricsgraphicsjs.org · its alternatives →

11. 11
    Chart.js 4.0▲111

    Open source JavaScript charting library for the modern web

    2022 · github.com · its alternatives →

12. 12VO
    Vizzu – Open-source charting library focused on animating charts▲115

    vizzu - Library for animated data visualizations and data stories

    2021 · lib.vizzuhq.com · its alternatives →

13. 13
    Plottable.js▲132

    Flexible, interactive charts for the web.

    2016 · plottablejs.org · its alternatives →

14. 14
    RoundtableJS – Open-source programmatic survey library▲49

    Hi HN, we’re Matt and Mayank of Roundtable. We’re launching RoundtableJS, an open-source library (https://github.com/roundtableAI/roundtable-js) to program research surveys at scale. Academic and market researchers want a DIY platform for survey research. Most existing tools are no-code, and these researchers want programmatic software that handles advanced branching logic and customization. We know this because we spent five years using open-source survey software for our academic work. One of the key insights of RoundtableJS is to leverage JavaScript’s async/await…

    2024 · github.com · its alternatives →

15. 15
    Charts▲8

    A simple and responsive SVG chart lib with zero dependencies

    2017 · frappe.github.io · its alternatives →

16. 16
    TradingView Lightweight Charts▲95

    Lightweight charts that are free, open-source & feature-rich

    2019 · tradingview.com · its alternatives →

17. 17
    You don't need to adopt new tools for LLM observability▲102

    If you've built any web-based app in the last 15 years, you probably used something like Datadog, New Relic, Sentry, etc. to monitor and trace your app, right? Why should it be different when the app you're building happens to be using LLMs? So today we're open-sourcing OpenLLMetry-JS. It's an open protocol and SDK, based on OpenTelemetry, that provides traces and metrics for LLM JS/TS applications and can be connected to any of the 15+ tools that already support OpenTelemetry. Here's the repo: https://github.com/traceloop/openllmetry-js A few months ago we launched…

    2024 · github.com · its alternatives →

18. 18
    GraphicsJS▲77

    Powerful free open-source JavaScript vector graphics library

    2016 · its alternatives →

19. 19
    Beautiful open source D3.js charts▲25

    Open source D3.js-based charting and visualization library for data exploration and data analysis

    2015 · taucharts.com · its alternatives →

20. 20
    ADTK – new Python library for time series anomaly detection▲67

    A Python toolkit for rule-based/unsupervised anomaly detection in time series - arundo/adtk

    2019 · github.com · its alternatives →

21. 21
    Vizzu – Open-source JavaScript library for animating charts▲8

    Library for animated data visualizations and data stories. - vizzuhq/vizzu-lib

    2021 · github.com · its alternatives →

22. 22SC
    Synchro Charts, a time-series visualization library▲19

    2021 · synchrocharts.com · its alternatives →

23. 23
    OpenAlgo Charts▲62

    OpenSource Charting Terminal for Financial Portals

    Sep 2026 · openalgo.in · its alternatives →

24. 24
    Time Door – A time series analysis API▲44

    Financial data visualization experiments built with Svelte and Three.js, exploring the boundaries of client-side performance, immersion, and data density.

    2019 · timedoor.xyz · 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 →