About

This is the personal website of Cal Henderson, Slack co-founder & CTO.

I give occasional talks, write code and sometimes articles.

» About Cal

Recent Tags

aws books cheese code covid emoji games halflife havana ibm lego maps math minecraft music php programming reading technology tube unicode via-matts via-momorgan wiring

Popular Tags

apple awesome bacon code coding comics design flickr food games javascript lego maps movie music perl php programming software tech tv video visualization web

Archives

2025: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov
2024: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2023: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2022: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2021: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2020: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2019: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2018: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2017: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2016: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2015: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2014: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2013: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2012: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2011: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2010: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2009: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2008: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2007: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2006: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2005: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2004: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2003: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2002: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2001: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2000: Jun Jul Aug Sep Oct Nov Dec