Indie Hackers - Connect with fellow entrepreneurs, developers, and bootstrappers who are sharing the strategies and revenue numbers behind their companies.

Todoist - Todoist is a to-do list that helps you get organized, at work and in life.

Makerlog - Makerlog is the dead-simple task log that helps you stay productive and ship faster.

Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.

Elpha - The most powerful network for women in tech.

Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.