Description: LanguageTool is an open-source AI writing assistant that detects grammar, spelling, and style errors in multiple languages to improve writing.
Security Features: Data Encryption, No Storage of Text by Default, Self-Hosted Option, GDPR Compliance, Optional Offline Mode, Secure API Access
Data Collection Level: Extensive
Security and Privacy Rating: ⭐⭐⯪☆☆ (2.60)
Deployment and Technical Details
Deployment Architecture: A standalone software – Runs entirely locally: If you download and install the LanguageTool desktop application or set up the offline version, it runs entirely on your computer without sending data to external servers. A locally hosted service with separate server and client component: You can also self-host LanguageTool by setting up the backend (server) and using browser extensions or other clients that connect to it. This gives you full control over your data while keeping the tool’s features. A service with a local client that’s hosted by a third party: You can install a browser extension, add-on, or use the web interface (the local client). These clients connect to LanguageTool’s remote servers, which handle grammar checking and processing. User text is sent to their servers for analysis unless you use a self-hosted or offline version.
License: LGPL-2.1 license
Cost: Free Core
Maintenance and Support
Maintenance Status: Has recent updates to the code. Development team is quick often. LanguageTool is part of the larger company, Learneo, which can provide funding. LanguageTool has paid/subscription versions that provide funding. The company seems to be financially stable as well.
Community Support: ✅
Maintenance and Sustainability Rating: ⭐⭐⭐⭐⯪ (4.30)
Testing Environment: HP Zbook 11th Gen Intel(R) Core(TM) i7-11800H @ 2.30GHz, OS: Windows, Network: WiFi
Additional Information
Limitations and Vulnerabilities: The browser extension depends on cloud-based checks, unless it is self-hosted. Advanced checks and longer text lengths are restricted unless the user upgrades to a paid plan. Performance testing has shown that the extensions can negatively impact page load times and responsiveness.