diff --git a/pl/cross/tools/coverage/codecov.txt b/pl/cross/tools/coverage/codecov.txt
index 3e387cd85..d805e4238 100644
--- a/pl/cross/tools/coverage/codecov.txt
+++ b/pl/cross/tools/coverage/codecov.txt
@@ -1,2 +1,25 @@
 https://codecov.io/
+https://about.codecov.io/pricing/
+https://about.codecov.io/product/features/
+
+https://docs.codecov.com/
+https://docs.codecov.com/reference/overview
+https://about.codecov.io/resources/
+https://about.codecov.io/product/integrations/
+https://www.youtube.com/channel/UCj-fJuvXv-m05HkSNn0OS9g/featured
+
+https://github.com/codecov
+https://about.codecov.io/for/open-source/
+
+https://github.com/codecov/codecov-action
+https://bitrise.io/integrations/steps/codecov
+
+https://github.com/codecov
+https://github.com/codecov/self-hosted
+https://github.com/codecov/self-hosted/blob/main/docker-compose.yml
+
+https://github.com/codecov/codecov-cli
+https://github.com/codecov/gazebo
+
+????
 https://medium.com/@Razican/continuous-integration-and-code-coverage-report-for-a-rust-project-5dfd4d68fbe5
diff --git a/pl/cross/tools/sentry.txt b/pl/cross/tools/sentry.txt
new file mode 100644
index 000000000..5b91d7d88
--- /dev/null
+++ b/pl/cross/tools/sentry.txt
@@ -0,0 +1,15 @@
+https://sentry.io/welcome:
+https://sentry.io/platforms/
+
+https://github.com/getsentry/
+https://github.com/getsentry/sentry
+https://github.com/getsentry/sentry-java
+
+https://sentry.io/for/profiling/
+https://docs.sentry.io/product/profiling/
+https://docs.sentry.io/product/profiling/flame-charts-graphs/
+https://docs.sentry.io/product/issues/issue-details/performance-issues/json-decoding-main-thread/
+https://docs.sentry.io/product/issues/issue-details/performance-issues/n-one-queries/?original_referrer=https%3A%2F%2Fsentry.io%2F
+
+2022
+https://blog.sentry.io/troubleshooting-spring-boot-applications-with-sentry/