Astrolog
Free and open-source astrology program for creating and interpreting horoscope charts.
Open the official app on www.astrolog.org
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Use it free
Open the official tool or demo — no account needed.
Self-host it
Run the open-source version on your own infrastructure.
What is Astrolog?
Astrolog is a freeware astrology program designed to provide users with insights into celestial events and their potential influence on human affairs. Developed as a cross-platform tool for Windows, Unix, and Macintosh, it enables users to generate and analyze astrological charts, horoscopes, and planetary alignments. The tool is particularly useful for individuals interested in exploring traditional astrology practices, offering a structured approach to interpreting astronomical data. Its open-source nature allows for customization and transparency, appealing to both amateur enthusiasts and professional astrologers. By simplifying complex astronomical calculations, Astrolog addresses the challenge of making astrology accessible without requiring advanced astronomical knowledge. The project's longevity, with a website active since 1996, underscores its role as a foundational resource in the astrology community.
How it works
Astrolog is a public domain astrology software suite that delivers horoscope generation, chart analysis, and planetary position tracking. Its primary purpose is to decode the relationships between celestial bodies and their potential impact on human behavior and events. The tool caters to astrology practitioners and curious users seeking to explore traditional astrological interpretations. It simplifies the process of creating and analyzing birth charts, solar returns, and synastry reports, making complex astronomical data more approachable. Astrolog supports generating horoscopes based on birth dates, analyzing planetary alignments, and calculating astronomical events like eclipses. It also provides detailed interpretations of zodiac signs and house positions. The program's source code availability allows advanced users to modify or extend its functionality.
How to use it
- 1Download the Astrolog executable from the official website. 2. Install the program on your chosen operating system. 3. Launch the application and input the desired date, time, and location to generate a chart. 4. Use built-in tools to analyze planetary positions and their interpretations. Practical tips include using the source code for customization, referencing the included documentation for advanced features, and ensuring accurate time zones for precise chart calculations.
What it can do
- astrology chart engine
Use cases
Assumptions and limitations
Assumptions
- source: https://www.astrolog.org/astrolog.htm
- license: Public Domain — free to use
- privacy: Self-hosted — you control your data
Limitations
- Limited support for modern UI/UX design compared to contemporary astrology tools
- No mobile application or cloud-based access
- Outdated documentation may hinder new users
- Minimal community support due to its niche audience
- Lack of integration with contemporary astronomical databases
Understanding the result
Free and open-source astrology program for creating and interpreting horoscope charts.
Tool details
- Clearly flagged when a network request is needed.
- No account, no sign-up, and no tracking of your content.
- Powered by (MIT).
- Built with
- (https://www.astrolog.org/astrolog.htm)
- License
- MIT
- Runs locally
- No — requires a network request
- Verification
- Not yet verified
- Input
- Query
- Output
- Text
Built with https://www.astrolog.org/astrolog.htm. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.
- Built with
- License
- MIT
Open-source project
OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.
References
- / — GitHub Repository
Upstream project · GitHub
- Public Domain License
Upstream project
Frequently asked
What platforms does Astrolog run on?
Astrolog is designed for Windows, Unix, and Macintosh systems. It requires a compatible operating system to execute its native binaries, with source code available for compiling on supported platforms.
How does Astrolog calculate astrological charts?
Astrolog uses traditional astronomical algorithms to compute planetary positions based on input date, time, and location. It references historical ephemerides and applies classical astrological principles to interpret celestial alignments, though its methods may differ from modern astronomical standards.
How do I generate a horoscope using Astrolog?
Launch the program, enter your birth date, time, and location in the designated fields. Select the chart type (e.g., natal, solar return) and use the built-in interpretation tools to analyze planetary placements and their symbolic meanings.
How does Astrolog compare to modern astrology software like Kepler or Cosmo?
Astrolog emphasizes traditional astrological methods with minimal modern enhancements, while tools like Kepler offer advanced computational accuracy and interactive visualizations. Cosmo provides a more streamlined interface for beginners, whereas Astrolog prioritizes open-source customization and historical practices.
What should I do if Astrolog fails to calculate a chart accurately?
Verify that your input date, time, and location are correct, ensuring precise time zone settings. Check for system compatibility issues, and consult the source code or community forums for potential bugs. If problems persist, consider using alternative astrology tools with updated algorithms.