Retrospector is a C# library typically used in Media applications. Retrospector has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.
UPDATE: We are in the process of rewriting this repo into three layers; Retrospector-JavaFx, Retrospector-Core, and Retrospector-Hsqldb. This will continute to be the main repo for issues, releases, and documentation. The update will be finished by July 20, 2019. Maintain an active list of your personal reviews/ratings of media. In a nutshell, with Retrospector you create a Media by entering a title and creator. Then you review that media by entering a number (1-10). In a month or a year, when you are looking for a movie to watch with friends, you can have your friends pick from your top 10 movies. There are a lot of practical use cases. Once you start using Retrospector, you will wonder how you lived without being able to answer questions like 'What was my average rating for Firefly?' or 'How many times have I seen The Holy Grail?'. Instructions on how to install Retrospector are here. In short, you make sure you have Java (a recent version), download the Retrospector.zip from the latest release, unzip and run Retrospector.jar.