updated software.md to include arcs

Author: badw

content/english/software.md

@@ -6,10 +6,21 @@ aliases = ["software"]
 author = "Benjamin A. D. Williamson"
 +++
 
-#### `reactit` Reaction Iterator 
+####  - `reactit` Reaction Iterator 
 
 [https://github.com/badw/reactit.git](https://github.com/badw/reactit.git)
 
 `reactit` is a code for generating all possible reactions between species in an efficient manner
 {{< figure src="/images/reactit.png" class="normal" width=200 >}}
 
+####  - `ARCS` Automated Reactions for CO<sub>2</sub> Storage
+
+[https://github.com/badw/arcs.git](https://github.com/badw/arcs.git)
+
+`arcs` is a package to aid research into impurity reactions within the CO<sub>2</sub> capture stream. `arcs` achieves this by stochastically sampling a reaction network setup using DFT calculated data. 
+This project was in collaboration with Equinor, Total Energies, and Shell. 
+
+A modified and forked version is provided at [https://github.com/equinor/arcs](https://github.com/equinor/arcs)
+
+{{< figure src="/images/arcs.png" class="normal" width=200 >}}
+