diff --git a/pages/common/argos-translate.md b/pages/common/argos-translate.md
index 4028901c55..eba837157c 100644
--- a/pages/common/argos-translate.md
+++ b/pages/common/argos-translate.md
@@ -1,7 +1,7 @@
 # argos-translate
 
 > An open-source offline translation library and CLI tool written in Python.
-> More information: <https://www.argosopentech.com/>.
+> More information: <https://argos-translate.readthedocs.io/en/latest/source/cli.html>.
 
 - Install translation pairs for Spanish to English translation:
 
diff --git a/pages/common/flake8.md b/pages/common/flake8.md
index 5bea501e9e..ccfae3c1c7 100644
--- a/pages/common/flake8.md
+++ b/pages/common/flake8.md
@@ -1,7 +1,7 @@
 # flake8
 
 > Check the style and quality of Python code.
-> More information: <https://flake8.pycqa.org/>.
+> More information: <https://flake8.pycqa.org/en/latest/user/options.html>.
 
 - Lint a file or directory recursively:
 
diff --git a/pages/common/heroku.md b/pages/common/heroku.md
index c2d5704441..94ea393d32 100644
--- a/pages/common/heroku.md
+++ b/pages/common/heroku.md
@@ -1,7 +1,7 @@
 # heroku
 
 > Create and manage Heroku apps.
-> More information: <https://www.heroku.com/>.
+> More information: <https://devcenter.heroku.com/articles/heroku-cli#get-started-with-the-heroku-cli>.
 
 - Log in to your Heroku account:
 
diff --git a/pages/common/linkchecker.md b/pages/common/linkchecker.md
index c8bb01b41a..7b9ef8eef7 100644
--- a/pages/common/linkchecker.md
+++ b/pages/common/linkchecker.md
@@ -1,7 +1,7 @@
 # linkchecker
 
 > Client to check HTML documents and websites for broken links.
-> More information: <https://linkchecker.github.io/linkchecker/>.
+> More information: <https://linkchecker.github.io/linkchecker/man/linkchecker.html>.
 
 - Find broken links on <https://example.com/>:
 
diff --git a/pages/common/monodevelop.md b/pages/common/monodevelop.md
index 912320cc9a..24251b27e0 100644
--- a/pages/common/monodevelop.md
+++ b/pages/common/monodevelop.md
@@ -1,7 +1,7 @@
 # monodevelop
 
 > Cross platform IDE for C#, F# and more.
-> More information: <https://www.monodevelop.com/>.
+> More information: <https://www.monodevelop.com/documentation/>.
 
 - Start MonoDevelop:
 
diff --git a/pages/common/pinta.md b/pages/common/pinta.md
index ee16e82920..be881da33a 100644
--- a/pages/common/pinta.md
+++ b/pages/common/pinta.md
@@ -1,7 +1,7 @@
 # pinta
 
 > A free, open source program for drawing and image editing.
-> More information: <https://www.pinta-project.com/>.
+> More information: <https://www.pinta-project.com/user-guide/overview/#>.
 
 - Start Pinta:
 
diff --git a/pages/common/serverless.md b/pages/common/serverless.md
index 8a68cd5e81..3897638a92 100644
--- a/pages/common/serverless.md
+++ b/pages/common/serverless.md
@@ -2,7 +2,7 @@
 
 > Toolkit for deploying and operating serverless architectures on AWS, Google Cloud, Azure and IBM OpenWhisk.
 > Commands can be run either using the `serverless` command or its alias, `sls`.
-> More information: <https://serverless.com/>.
+> More information: <https://www.serverless.com/framework/docs/providers/aws/cli-reference>.
 
 - Create a serverless project:
 
diff --git a/pages/common/tcpreplay.md b/pages/common/tcpreplay.md
index f47ca92616..0821fd17d3 100644
--- a/pages/common/tcpreplay.md
+++ b/pages/common/tcpreplay.md
@@ -1,7 +1,7 @@
 # tcpreplay
 
 > Replay network traffic stored in a `pcap` file.
-> More information: <https://tcpreplay.appneta.com/>.
+> More information: <https://tcpreplay.appneta.com/wiki/tcpreplay-man.html>.
 
 - List available network interfaces:
 
diff --git a/pages/linux/etckeeper.md b/pages/linux/etckeeper.md
index c8037925b7..e75088e4a3 100644
--- a/pages/linux/etckeeper.md
+++ b/pages/linux/etckeeper.md
@@ -1,7 +1,7 @@
 # etckeeper
 
 > Track system configuration files in Git.
-> More information: <https://etckeeper.branchable.com/>.
+> More information: <https://manned.org/etckeeper>.
 
 - Set up a Git repo and perform various setup tasks (run from `/etc`):
 
diff --git a/pages/linux/links.md b/pages/linux/links.md
index 2895516c60..31dfeabf69 100644
--- a/pages/linux/links.md
+++ b/pages/linux/links.md
@@ -1,7 +1,7 @@
 # links
 
 > Command-line web browser.
-> More information: <http://links.twibright.com/>.
+> More information: <http://links.twibright.com/user_en.html#subch-browser_calibration>.
 
 - Visit a website:
 
diff --git a/pages/linux/links2.md b/pages/linux/links2.md
index 8a7b9ee11a..34bb9e54d9 100644
--- a/pages/linux/links2.md
+++ b/pages/linux/links2.md
@@ -2,7 +2,7 @@
 
 > Command-line web browser.
 > See also: `links`.
-> More information: <http://links.twibright.com/>.
+> More information: <http://links.twibright.com/user_en.html#subch-browser_calibration>.
 
 - Visit a website in graphics mode:
 
diff --git a/pages/osx/cot.md b/pages/osx/cot.md
index 4b2a9e2a6f..9950290a98 100644
--- a/pages/osx/cot.md
+++ b/pages/osx/cot.md
@@ -1,7 +1,7 @@
 # cot
 
 > The Plain-Text Editor for macOS.
-> More information: <https://coteditor.com/>.
+> More information: <https://coteditor.com/cot>.
 
 - Start CotEditor: