Tesse is described as 'expert search engine which allows you to search and connect with global experts by a keyword of skills or expertise' and is an app in the Online Services category. There are more than 50 alternatives to Tesse for a variety of platforms, including Online / Web-based, Android, iPhone, Windows and iPad. The best alternative is Reddit, which is free. Other great apps like Tesse are Stack Overflow (Free Personal), searx (Free, Open Source), Slant (Free) and Quora (Free).
Reddit (stylized in its logo as reddit) is an American social news aggregation, web content rating, and discussion website. Registered members submit content to the site such as links, text posts, and images, which are then voted up or down by other members.
Stack Overflow, part of Stack Exchange, is a free, community-driven, reputation-based Q & A site for computer programmers. No membership is required to ask questions or provide answers to questions by others.
Quora.com is a question/answer service allowing users to pose questions that other users can answer, each question and answer can have comments, each users can write one individual answer and there can be a summary answer.