Here are the top 3 alternative websites to SmallSEOTools, based on popularity, tool variety, and reliability:

1. Prepostseo.com

This is widely considered the biggest direct competitor to SmallSEOTools. It offers a massive suite of over 115 free tools, covering plagiarism checking, grammar checking, text humanizers, and various text and image converters. It has a very similar interface (all tools listed on the left) and offers higher word limits on some free tools compared to its competitor.

2. Duplichecker.com

As the name suggests, this site started as a plagiarism checker but has grown into a comprehensive SEO and text tool hub. It is excellent for basic grammar checks, keyword density analysis, and file conversion (like Word to PDF). It is known for being straightforward, having fewer ads than some competitors, and not forcing users to create an account for basic functions.

3. Seoscouters.com

This is a great alternative if you prefer a cleaner, more modern interface than the somewhat dated look of SmallSEOTools. It provides a solid collection of the most commonly used tools, such as case converters, plagiarism checkers, backlink checkers, and paraphrasing tools. It tends to be faster and less cluttered with pop-ups.

Honorable Mention: 7search.com (While primarily an ads platform, they also host a smaller but useful collection of free SEO tools similar to the ones mentioned above.)