diff --git a/README.md b/README.md
index a0745f62b2dc36e1a4cc77e981795ec26074babf..042fb3027d56013457edd58c68fceaa430a056d2 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,13 @@ I haven't used it yet.
 
 URL: <https://github.com/yglukhov/nimpy>
 
+### beautifulsoup
+
+To parse XML formats.
+
+URL: <https://www.crummy.com/software/BeautifulSoup/>
+
+
 ## Data analysis
 
 ### scipy
@@ -52,7 +59,7 @@ URL: <https://docs.scipy.org/doc/scipy/index.html>
 
 ### numpy
 
-Like with scipy, I usually use it in combination with
+Like with scipy, I usually use it in combination with other libraries that depend on it.
 
 URL: <https://numpy.org/>
 
@@ -64,10 +71,14 @@ URL: <https://pandas.pydata.org/>
 
 ### scikit-learn
 
+General machine learning.
+
 URL: <https://scikit-learn.org/stable/>
 
 ### matplotlib
 
+Graphics.
+
 URL: <https://matplotlib.org/>
 
 ### seaborn
@@ -153,6 +164,19 @@ Wrapper around bedtools, to work with genomic intervals.
 
 URL: <https://daler.github.io/pybedtools/>
 
+### deeptools
+
+Various tools to display "deep" sequencing data. There is a Python API.
+
+URL: <https://deeptools.readthedocs.io/en/develop/index.html>
+
+
+### pybigwig
+
+To handle bigwig files.
+
+URL: <https://github.com/deeptools/pyBigWig>
+
 ### biotite
 
 I used some of the tools it provides to display sequences, with colours: