Pharo

Pharo is a cross-platform implementation of the classic Smalltalk-80 programming language and runtime system.^[3] It is based on the OpenSmalltalk virtual machine (VM) named Cog,^[4]^[5]^[6]^[7]^: 16 which evaluates a dynamic, reflective, and object-oriented programming language with a syntax closely resembling Smalltalk-80. It is free and open-source software, released under a mix of MIT, and Apache 2 licenses.

Pharo is shipped with source code compiled into a system image that contains all software needed to run Pharo.^[7]^: 16 Like the original Smalltalk-80, Pharo provides several live programming features such as immediate object manipulation, live updates, and just-in-time compilation (JIT). The system image includes an integrated development environment (IDE) to modify its components.

Pharo was forked from Squeak v3.9 in March of 2008.^[8]^[3]^[7]^[7]^: 10^[9]

^ https://pharo.org/news/2024-04-26-pharo12-released.html. {{cite web}}: Missing or empty |title= (help)
^ Pharo license information
^ ^a ^b Black, Andrew P.; Ducasse, Stéphane; Nierstrasz, Oscar; Pollet, Damien; Cassou, Damien; Denker, Marcus (October 28, 2009). Pharo by example. Kehrsatz, Switzerland. ISBN 978-3-9523341-4-0. OCLC 957555627.{{cite book}}: CS1 maint: location missing publisher (link)
^ "OpenSmalltalk". opensmalltalk.org. Retrieved November 24, 2021.
^ OpenSmalltalk/opensmalltalk-vm, OpenSmalltalk, November 23, 2021, retrieved November 24, 2021
^ "Cog Blog: About Cog". Retrieved November 24, 2021.
^ ^a ^b ^c ^d Black, Andrew P.; Ducasse, Stéphane; Nierstrasz, Oscar; Pollet, Damien (October 28, 2009). Pharo by Example. Samuel Morello. ISBN 978-3-9523341-4-0.
^ "DevelopOnTheWeb". developontheweb.co.uk. Retrieved November 24, 2021.
^ "The Rise and Fall of Commercial Smalltalk". www.wirfs-brock.com. Retrieved November 24, 2021.