# Abstract The recent popularity growth of instant messengers made them the main communication and content distribution media for a huge number of people. However, a consequence of such popularity is user freedom and security. Majority of today’s popular messengers are prone to security and anonymity issues due to their centralized nature complemented by the requirement to disclose their phone number and contact book, because it’s been used for user identification. This paper presents Tingl, an open-source secure messaging and content distribution application which uses a distributed network of servers and an onion routing protocol to send end-to-end encrypted messages with minimal exposure of user metadata. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://redwerk.gitbook.io/tingl-end-to-end-encrypted-secure-p2p-messenger/abstract.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.