* Plan 9 from Bell Labs* Go (programming language) - Similar language from Google* Vita Nuova page on Limbo* A Descent into Limbo by Brian Kernighan* The Limbo Programming Language by Dennis M. Ritchie and Addendum by Vita Nuova.
==References====External links==* Vita Nuova page on Limbo* A Descent into Limbo by Brian Kernighan* The Limbo Programming Language by Dennis M. Ritchie and Addendum by Vita Nuova.