About DevLadder

DevLadder is a free learning site with step-by-step tutorials, interview questions and cheat sheets for software developers. It currently has 61 courses, from computer fundamentals and data structures to C#, .NET, SQL Server, cloud, DevOps, frontend frameworks, automation and Industry 4.0.

Who writes it

DevLadder is built and maintained by Divakar Upadhyay, a full-stack .NET developer with about nine years of experience building business systems with C#, ASP.NET, SQL Server and modern JavaScript frameworks. The lessons are written from that day-to-day work and from real interview experience.

How the content is made

• Every course goes from basics to advanced, so you can learn in order without gaps.
• Interview questions are grouped by level and priority, with a short answer you can say out loud.
• Facts are checked against official documentation. If you spot a mistake, please tell us.

How the site is funded

All lessons are free. To pay for hosting and keep it free, the site may show advertising and may link to books, courses or tools as an affiliate. See the affiliate & advertising disclosure for details.