One of the programs is needed only because caps lock was rebound at the OS level. But Karabiner Elements can do the control or escape trick without that remappi

One of the programs is needed only because caps lock was rebound at the OS level. But Karabiner Elements can do the control or escape trick without that remapping. I do the window switching with Hammerspoon and a prefix key: after typing alt-space Hammerspoon will show a modal overlay summarizing the available keys: w for web browser, t for e-mail client, space for terminal.