[4] He serves on the board of SMASH,[5] a non-profit founded by his wife, Freada Kapor Klein, to help underrepresented scholars hone their STEM knowledge while building personal networks and skills for careers in tech and the sciences.

Shortly after Kapor left VisiCorp, he and Sachs produced an integrated spreadsheet and graphics program.

Even though IBM and VisiCorp had a collaboration agreement whereby VisiCalc was being shipped simultaneously with the PC, Lotus had a clearly superior product.

EFF defends civil liberties in the digital world and works to ensure that rights and freedoms are enhanced and protected as the use of technology grows.

[17] In May 2009, after founder Susan P. Crawford joined the Obama administration, Kapor took over chairmanship of OneWebDay—the "Earth Day for the internet".

As an active angel investor, Kapor participated in the initial rounds of Dropcam, Twilio, Asana, Cleanify and Uber.

[24] In August 2015, Mitch and Freada Kapor announced they would invest $40 million over three years to accelerate their work to make the tech ecosystem more inclusive.

[25][6][7][26] In addition to his roles at Kapor Capital and Kapor Center, Mitch currently serves on the board of SMASH, whose mission is to enhance equal opportunity in education and the workplace, and sits on the advisory board of Generation Investment Management, a firm whose vision is to embed sustainability into the mainstream capital markets.