start docs existing_solutions

doku/content/existing_solutions.asciidoc

@@ -0,0 +1,12 @@
+=== Code Grade ===
+link:https://docs.codegra.de[CodeGra.de]
+
+Commercial solution for grading code submissions in an external tool, integratable via the open LTI interface.
+
+==== Features ====
+
+* Automatic grading through unit tests, I/O, error code, linter
+* Inline comments like code review
+* Plagiarism detection to check similarity between submissions
+
+=== CodeOcean ===

doku/main.asciidoc

@@ -97,4 +97,8 @@ This is the git server that stores the user input data for solving tasks in the
 It follows a predefined structure for storing user input data. Each user has a separate repository with a unique ID. Inside the repository, there are diffrent branches for each course. Each branch contains the user input data for the course. This makes it easy to manage user input data and track changes.
 The repository makes it possible to work in your own environment and push the changes to the repository. The backend fetches the changes and updates the user input data. This makes it easy to work offline and collaborate with others.
 
-Repositorys need to be secured and limited in size. That users can't upload large files or malicious content. The repository should be monitored and checked for changes. It should be possible to revert changes and restore the repository to a previous state.
+Repositorys need to be secured and limited in size. That users can't upload large files or malicious content. The repository should be monitored and checked for changes. It should be possible to revert changes and restore the repository to a previous state.
+
+## Existing Solutions
+
+include::content/existing_solutions.asciidoc[]