Life & fun · alternatives · 2026

24 alternatives to Duckling

Datetime expression parser (opensource)

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

1. 1DO
   Duckling – Open-source datetime expression parsing▲136

   2014 · duckling-lib.org · its alternatives →

2. 2
   Duck Programming Language▲64

   A simple scripting language based on the idea of duck-typing

   2014 · ducklang.org · its alternatives →

3. 3
   Ugly Duckling▲739

   Consistency on 𝕏 made easier

   2024 · parnian.app · its alternatives →

4. 4
   Duckly▲314

   Collaborate on any page with a Figma-like experience

   2021 · duckly.com · its alternatives →

5. 5DU
   Duck-UI – Browser-Based SQL IDE for DuckDB▲213

   I built Duck-UI, a web-based SQL editor that runs DuckDB entirely in your browser via WebAssembly. No backend required. The Problem: Every time I needed to query csv, parquet, or even to play with SQL, I had to either: (a) spin up a Jupyter notebook (b) use the CLI (c) upload to a hosted service. Friction at every step (TOO MUCH to load a csv or even to test some sql (study)... The Solution: DuckDB's WASM runtime lets us run SQL analysis client-side. Load CSV/JSON/Parquet files from disk or URL, write SQL, get results instantly. Data stays on your machine. What It Does: SQL editor…

   2025 · demo.duckui.com · its alternatives →

6. 6
   A fast ISO8601 date-time parser for Python▲55

   2014 · hack.close.io · its alternatives →

7. 7
   Moment.js▲279

   Parse, validate, manipulate, and display dates in JavaScript

   2015 · momentjs.com · its alternatives →

8. 8
   AnyDate API▲7

   Universal date & time parsing API

   2025 · anydateapi.up.railway.app · its alternatives →

9. 9
   Easy Python Time Parsing▲21

   I recently build a python time-parser that can parse most formats in a single line. Might be useful to some here. (Also happy to hear feedback and feature requests)

   2025 · github.com · its alternatives →

10. 10
    Duckie▲72

    A Tool for One Person Pair Programming

    2014 · its alternatives →

11. 11
    tu – Convert natural language date/time to UTC▲83

    CLI tool to convert a natural language date/time string to UTC - ad-si/tu

    2024 · github.com · its alternatives →

12. 12DA
    Duck, a chat-based note app for your knowledge base▲88

    2023 · site.ducknote.app · its alternatives →

13. 13
    Summarize your time availability in seconds▲109

    Simple tool to share your availability as plain text. Select time slots, convert timezones, copy and send. No calendar links needed.

    2020 · whattime.today · its alternatives →

14. 14
    Duck Hunt JS▲86

    DuckHunt ported to JS and HTML5 with a level creator.

    2015 · mattsurabian.com · its alternatives →

15. 15
    Ducklang: Achieving 100x more requests per second than NextJS▲9

    Duck (https://duck-lang.dev) is a statically typed, compiled programming language that combines the best of Rust, TypeScript and Go, aiming to provide an alternative for full-stack-development while being as familiar as possible Improvements over Rust: - garbage collection simplifies developing network applications - no lifetimes - built-in concurrency runtime and apis for web development Improvements over bun/node/typescript: - massive performance gains due to Go's support for parallel execution and native code generation - easier deployment since Duck compiles to a…

    Jan 2026 · duck-lang.dev · its alternatives →

16. 16
    Open-source AI web parser lib & TUI▲17

    Hey HN! I'm open-sourcing a little weekend side project. It's a terminal UI that generates parsers for webpages using AI, and a library that runs these parsers while you browse (it connects to Chrome over CDP). You can parse Twitter, LinkedIn, and HN posts and they get saved to a DuckDB database, so you can query them later. Contributions welcome! I wrote a bit more about it here: https://0thernet.substack.com/p/memo-2-selectron

    2025 · github.com · its alternatives →

17. 17
    Knwl.js - Scan through text for data that may be of interest▲43

    Find Dates, Places, Times, and More. A .js library for parsing text for specific information. - benhmoore/Knwl

    2013 · github.com · its alternatives →

18. 18NL
    Natural Language Time Zone Converter▲8

    2015 · slashtz.com · its alternatives →

19. 19
    duck▲2

    duckll

    2022 · duck8881.bandzoogle.com · its alternatives →

20. 20OI
    Online Interactive Parser▲21

    2021 · fransfaase.github.io · its alternatives →

21. 21
    An expression parser supporting multiple types▲33

    This C library is part of a main project aimed at providing a reactive key-value (KV) database. The data is typed (numbers, strings, dates, or booleans) and can include formulas with references to other entries. Clients connected to this database receive a real-time data stream with updates to the subscribed keys, allowing them to react to changes and their dependencies. Essentially, it’s like building a distributed Excel, where data and formulas dynamically update across the system. I couldn’t find any libraries that offered the full set of features I needed for evaluating expressions, so I…

    2024 · github.com · its alternatives →

22. 22MW
    My Weekend Project – Automatically determine date format string▲28

    2018 · date-format.xyz · its alternatives →

23. 23
    LANG DUCK▲18

    alternative to lang.*

    2025 · its alternatives →

24. 24TA
    Timezones and Datetimes in Python▲5

    2015 · delorean.readthedocs.org · 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 →