Updates research/computing/services

research/computing/services.md

 [[!meta title="Free and Open Source Services"]]
 
-This is a FOSS listing for service hosting. Staying on this list doesn't mean
+An awesome list of FOSS "services".
+
+This is a cureted FOSS listing for service hosting. Staying on this list doesn't mean
 that a given software is recommended or audited in the spirit of the [Franklin
 Street Statement on Freedom and Network
 Services](http://wiki.p2pfoundation.net/Franklin_Street_Statement_on_Freedom_and_Network_Services).
@@ -229,7 +231,8 @@ Office
 * [Discourse](https://www.discourse.org/): "civilized discussion for your community".
 * [mat2 web](https://dustri.org/b/mat2-for-the-web.html).
 
-Finance:
+Finance
+-------
 
 * [Timestrap: time tracking and invoicing](https://github.com/overshard/timestrap).
 * [ihatemoney - Account manager](https://ihatemoney.org/) ([code](https://github.com/spiral-project/ihatemoney)).
@@ -238,8 +241,9 @@ Finance:
 Conferences
 -----------
 
-* [EasyChair Smart CFP](https://easychair.org/cfp/).
+* [pretalx — CfP and scheduling for conferences](https://pretalx.com): From Call for Papers to schedule – build your conference!
 * [frab - conference management system](https://frab.github.io/frab/) with [ANGELSYSTEM - online tool for coordinating helpers and work shifts on large events](https://engelsystem.de/index_en.html).
+* [EasyChair Smart CFP](https://easychair.org/cfp/).
 
 URL shorteners
 --------------
@@ -392,6 +396,13 @@ Mobilization
 * [LimeSurvey](http://www.limesurvey.org).
 * [Loomio](https://github.com/loomio/loomio).
 
+Decision-making
+---------------
+
+* [Decidim](https://decidim.org/): digital platform for citizen participation.
+  Free/libre, open and safe technology. With all democratic guarantees.
+  Reprogramming democracy is now possible with Decidim.
+
 Email
 -----