emacs-checksum VS mu4e-dashboard

I've wrote some toy modes for Emacs, as much as I love Elisp, there is nothing compared to Common Lisp for me yet. Slime is overkill. I don't know if you're aware but there is a Elisp REPL in Emacs M-x ielm. Something you could go for, is to write things using Elisp, and then interface it using Common Lisp in the back if you need to do something that Elisp can't like I did in my toy project here.

Inspired by Nicolas Rougier's mu4e-dashboard, I tried to create a similar dasboard for my org-agenda. The links in the dashboard open an agenda search window in the middle window, which by default shows a weekly agenda. This combined with the side window on the right (mostly taken from Rougier's task agenda) makes for a rather nice setup, I believe.

Sidebar is a child frame that is displayed on the left side of a regular frame and can be used to display any kind of information. In the screenshot above, it displays a mue4e dashboard (https://github.com/rougier/mu4e-dashboard) . I did not find how to have per-frame theme and I ended up exploiting the dark/light mode frame settings and theme will adapt (if it includes the two modes). Here, the theme here is nano-theme (https://github.com/rougier/nano-theme) and the sidebar uses the dark version.

mu4e-dashboard (https://github.com/rougier/mu4e-dashboard),

My weird idea is that I think Emacs could be a great platform to ship software. Just like people use Electron to ship apps, we could use Emacs to ship apps as well. We would have a great power for customization. We have buttons (widgets) that can be a little hard to understand at first, but dashboard-mode and spacemacs are good examples that we can have beautiful "interfaces" in Emacs. Look at mu4e-dashboard, we could have a very beautiful and functional email software in Emacs someday, we just need an easier way to setup email because it can be really painful.