# Open-Source Alternatives to When2meet

> AI-ranked search results for `open source alternatives to when2meet` on awesome-repositories.com — ordered by an LLM for relevance, best match first. 107 total matches; showing the top 12.

Explore on the web: https://awesome-repositories.com/q/open-source-alternatives-to-when2meet

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## Results

- [nextcloud/calendar](https://awesome-repositories.com/repository/nextcloud-calendar.md) (1,150 ⭐) — This project is a self-hosted calendar application designed for personal information management and collaborative team scheduling. It functions as a centralized platform for tracking time-based commitments, managing shared calendars, and coordinating appointments through the standard protocol for calendar data exchange.

The application distinguishes itself by integrating automated scheduling tools, such as public booking links and availability windows, which allow external participants to reserve time slots without manual coordination. It supports complex team environments by providing real-t
- [calcom/cal.com](https://awesome-repositories.com/repository/calcom-cal-com.md) (45,760 ⭐) — Cal.com is a comprehensive scheduling infrastructure platform designed to manage availability, booking workflows, and calendar synchronization across multiple users and external services. It provides a backend service for automated appointment scheduling, enabling the creation, confirmation, and management of booking lifecycles through a centralized state machine. The platform also offers embeddable user interface components that allow developers to integrate interactive booking experiences directly into third-party websites.

What distinguishes the platform is its extensible app ecosystem and
- [spencermountain/spacetime](https://awesome-repositories.com/repository/spencermountain-spacetime.md) (4,109 ⭐) — Spacetime is a JavaScript timezone library and date manipulation framework designed for parsing, formatting, and managing dates across global timezones. It provides an internationalization tool for localizing date components and includes static type definitions for TypeScript environments to ensure type checking and autocompletion.

The project features a plugin system for custom date logic, allowing the injection of specialized methods and behaviors into date objects. This extensibility enables the implementation of project-specific time requirements through prototype-based method extensions.
- [chronotope/chrono](https://awesome-repositories.com/repository/chronotope-chrono.md) (3,870 ⭐) — Chrono is a Rust date and time library used for managing calendar dates, clock times, and timezone conversions. It functions as a high-precision timestamp tool and temporal data serializer for converting date and time objects into structured formats.

The library includes a timezone conversion engine to translate timestamps between different geographical zones and manage local time configurations.

Its broader capabilities cover date string formatting, high-precision timing, and the serialization of temporal data for database storage or network transmission.
- [arrow-py/arrow](https://awesome-repositories.com/repository/arrow-py-arrow.md) (9,046 ⭐) — Arrow is a Python date and time library that provides a simplified interface for creating and manipulating timestamps by wrapping the Python standard library. It serves as a tool for managing date objects, handling timezone offsets, and performing relative date calculations.

The library is distinguished by its ability to humanize timestamps into natural language relative descriptions across multiple locales and parse human-readable time phrases back into precise date objects. It also features a specialized parser for converting ISO 8601 strings and custom formatted text into date objects.

Br
- [crsmithdev/arrow](https://awesome-repositories.com/repository/crsmithdev-arrow.md) (9,044 ⭐) — Arrow is a Python date and time library designed for parsing, formatting, and manipulating date and time objects. It provides a simplified interface for these operations compared to the Python standard library.

The library includes tools for converting standardized date strings via an ISO 8601 parser and transforming timestamps into human-readable relative strings across different locales. It also features a utility for translating timestamps between global timezones using location data objects.

Additional capabilities cover date string formatting, time object generation, and the calculation
- [pinax/django-user-accounts](https://awesome-repositories.com/repository/pinax-django-user-accounts.md) (1,222 ⭐) — Django User Accounts is a modular library for managing user registration, authentication, and profile workflows within Django applications. It provides a comprehensive framework for handling the full account lifecycle, including secure credential verification, password recovery, and email-based identity confirmation.

The project distinguishes itself through a highly extensible architecture that allows developers to override default class-based views and implement custom hooks for unique user model requirements. It supports database-backed profile extensions, enabling the mapping of custom use
- [moment/moment](https://awesome-repositories.com/repository/moment-moment.md) (47,965 ⭐) — Moment is a JavaScript date manipulation library used for parsing, validating, manipulating, and formatting dates and times. It provides a system for converting date strings into structured objects using the ISO 8601 standard or custom tokens.

The library includes a timezone management tool for handling UTC offsets and geographic timezones, ensuring accurate date calculations across different regions. It features an internationalized date formatter and a relative time calculator to render timestamps as human-friendly durations adapted to various cultural locales and languages.

The project co
- [hacker0x01/react-datepicker](https://awesome-repositories.com/repository/hacker0x01-react-datepicker.md) (8,366 ⭐) — This project is a reusable React datepicker component providing an accessible, localized interface for selecting dates and times within web applications. It functions as an input field that triggers a calendar popup for precise temporal data entry.

The component is designed for flexibility, allowing for a customizable calendar layout and the integration of custom external elements to trigger the picker. It supports marking holidays with custom labels and styles and implements date selection restrictions through boundaries, exclusion lists, and filter functions.

The system includes comprehens
- [formkit/tempo](https://awesome-repositories.com/repository/formkit-tempo.md) (2,581 ⭐) — Tempo is a JavaScript date manipulation library that provides a suite of tools for parsing, formatting, and calculating dates and times. It serves as a date arithmetic engine, a locale-aware formatter, and a timezone offset manager for native JavaScript date objects.

The library includes a dedicated ISO 8601 date parser for validating and converting standardized strings into date objects. It handles geographic normalization through IANA timezone offset management and utilizes the native Internationalization API for region-specific date formatting.

The project covers a broad range of date and
- [malcommac/swiftdate](https://awesome-repositories.com/repository/malcommac-swiftdate.md) (7,703 ⭐) — SwiftDate is a date manipulation library for the Swift programming language. It provides a toolkit for parsing, validating, and formatting dates, times, and timezones.

The library includes a relative time generator for producing date offsets based on reference points such as tomorrow or next week, and a localized date formatter for transforming date objects into human-readable strings across multiple languages and locales. It also features an ISO8601 date parser to convert standardized date strings from SQL, HTTP, and ISO8601 formats into structured objects, alongside tools for managing timez
- [sdispater/pendulum](https://awesome-repositories.com/repository/sdispater-pendulum.md) (6,668 ⭐) — Pendulum is a Python date and time library that provides a simplified interface for date arithmetic, ISO parsing, localization, and timezone management. It serves as a replacement for the standard library datetime module, extending existing classes to maintain compatibility while offering a more intuitive management interface.

The library distinguishes itself through a natural language date formatter that translates time differences into localized strings and a dedicated ISO 8601 date parser. It also includes tools for time-dependent logic testing, allowing the system clock to be mocked or fi