diff --git a/docs/src/core_concepts/mutator.md b/docs/src/core_concepts/mutator.md
index 8406de7918..1956befd7c 100644
--- a/docs/src/core_concepts/mutator.md
+++ b/docs/src/core_concepts/mutator.md
@@ -6,6 +6,6 @@ Mutators can be composed, and they are generally linked to a specific Input type
 
 There can be, for instance, a Mutator that applies more than a single type of mutation to the input. Consider a generic Mutator for a byte stream, bit flip is just one of the possible mutations but not the only one, there is also, for instance, the random replacement of a byte of the copy of a chunk.
 
-There are also mutators that always produce valid inputs, say a mutator that generates valid Json or code, but these grammar based mutators need a grammar to work.
+There are also mutators that always produce valid inputs, say a mutator that generates valid JSON or code, but these grammar based mutators need a grammar to work.
 
 In LibAFL, [`Mutator`](https://docs.rs/libafl/latest/libafl/mutators/trait.Mutator.html) is a trait.
diff --git a/fuzzers/dynamic_analysis/concatenator.py b/fuzzers/dynamic_analysis/concatenator.py
index 0948167628..72f09f56c6 100755
--- a/fuzzers/dynamic_analysis/concatenator.py
+++ b/fuzzers/dynamic_analysis/concatenator.py
@@ -25,7 +25,7 @@ def concatenate_json_files(input_dir):
     with open(output_file, 'w') as file:
         json.dump([data], file)
     
-    print(f"Json files concatenated successfully! Output file: {output_file}")
+    print(f"JSON files concatenated successfully! Output file: {output_file}")
 
 if __name__ == '__main__':
     if len(sys.argv) != 2:
diff --git a/fuzzers/libfuzzer_libpng_aflpp_ui/src/lib.rs b/fuzzers/libfuzzer_libpng_aflpp_ui/src/lib.rs
index c4d80c7adf..af8a885aa8 100644
--- a/fuzzers/libfuzzer_libpng_aflpp_ui/src/lib.rs
+++ b/fuzzers/libfuzzer_libpng_aflpp_ui/src/lib.rs
@@ -69,8 +69,7 @@ fn fuzz(
     // 'While the stats are state, they are usually used in the broker - which is likely never restarted
     // let monitor = MultiMonitor::new(|s| println!("{s}"));
 
-    //Setup an Monitor with AFL-Style UI to display the stats
-    #[cfg(feature = "tui")]
+    // Setup an Monitor with AFL-Style UI to display the stats
     let monitor = TuiMonitor::builder()
         .title("Libfuzzer in LibAFL")
         .version("0.0.1")
diff --git a/libafl/src/corpus/ondisk.rs b/libafl/src/corpus/ondisk.rs
index 221d218411..273700d2ed 100644
--- a/libafl/src/corpus/ondisk.rs
+++ b/libafl/src/corpus/ondisk.rs
@@ -24,9 +24,9 @@ use crate::{
 pub enum OnDiskMetadataFormat {
     /// A binary-encoded postcard
     Postcard,
-    /// Json
+    /// JSON
     Json,
-    /// Json formatted for readability
+    /// JSON formatted for readability
     #[default]
     JsonPretty,
     /// The same as [`OnDiskMetadataFormat::JsonPretty`], but compressed
diff --git a/libafl/src/monitors/disk.rs b/libafl/src/monitors/disk.rs
index baaeb4d30b..ed745ae07b 100644
--- a/libafl/src/monitors/disk.rs
+++ b/libafl/src/monitors/disk.rs
@@ -1,4 +1,4 @@
-//! Monitors that wrap a base monitor and also log to disk using different formats.
+//! Monitors that wrap a base monitor and also log to disk using different formats like `JSON` and `TOML`.
 
 use alloc::{string::String, vec::Vec};
 use core::time::Duration;
diff --git a/libafl/src/monitors/mod.rs b/libafl/src/monitors/mod.rs
index 5800539463..9a4ede5348 100644
--- a/libafl/src/monitors/mod.rs
+++ b/libafl/src/monitors/mod.rs
@@ -7,7 +7,6 @@ pub use multi::MultiMonitor;
 pub mod tui;
 
 #[cfg(all(feature = "prometheus_monitor", feature = "std"))]
-#[allow(missing_docs)]
 pub mod prometheus;
 use alloc::string::ToString;
 
diff --git a/libafl/src/monitors/multi.rs b/libafl/src/monitors/multi.rs
index cf338781f3..e5a3e56c0e 100644
--- a/libafl/src/monitors/multi.rs
+++ b/libafl/src/monitors/multi.rs
@@ -1,4 +1,4 @@
-//! Monitor to display both cumulative and per-client monitor
+//! The [`MultiMonitor`] displays both cumulative and per-client stats.
 
 use alloc::{string::String, vec::Vec};
 use core::{
diff --git a/libafl/src/monitors/prometheus.rs b/libafl/src/monitors/prometheus.rs
index 4eaf567209..cdaa27b587 100644
--- a/libafl/src/monitors/prometheus.rs
+++ b/libafl/src/monitors/prometheus.rs
@@ -1,16 +1,16 @@
-//! Prometheus Monitor to log to a prometheus endpoint.
+//! The [`PrometheusMonitor`] logs fuzzer progress to a prometheus endpoint.
 //!
 //! ## Overview
 //!
 //! The client (i.e., the fuzzer) sets up an HTTP endpoint (/metrics).
 //! The endpoint contains metrics such as execution rate.
 //!
-//! A prometheus server (can use a precompiled binary or docker) then scrapes \
+//! A prometheus server (can use a precompiled binary or docker) then scrapes
 //! the endpoint at regular intervals (configurable via prometheus.yml file).
 //!
 //! ## How to use it
 //!
-//! This monitor should plug into any fuzzer similar to other monitors.
+//! Create a [`PrometheusMonitor`] and plug it into any fuzzer similar to other monitors.
 //! In your fuzzer:
 //!
 //! ```rust
@@ -199,6 +199,9 @@ impl<F> PrometheusMonitor<F>
 where
     F: FnMut(&str),
 {
+    /// Create a new [`PrometheusMonitor`].
+    /// The `listener` is the address to send logs to.
+    /// The `print_fn` is the printing function that can output the logs otherwise.
     pub fn new(listener: String, print_fn: F) -> Self {
         // Gauge's implementation of clone uses Arc
         let corpus_count = Family::<Labels, Gauge>::default();
@@ -290,9 +293,9 @@ where
     }
 }
 
-// set up an HTTP endpoint /metrics
+/// Set up an HTTP endpoint /metrics
 #[allow(clippy::too_many_arguments)]
-pub async fn serve_metrics(
+pub(crate) async fn serve_metrics(
     listener: String,
     corpus: Family<Labels, Gauge>,
     objectives: Family<Labels, Gauge>,
@@ -354,12 +357,16 @@ pub async fn serve_metrics(
     Ok(())
 }
 
+/// Struct used to define the labels in `prometheus`.
 #[derive(Clone, Hash, PartialEq, Eq, EncodeLabelSet, Debug)]
 pub struct Labels {
-    client: u32, // sender_id: u32, to differentiate between clients when multiple are spawned.
-    stat: Cow<'static, str>, // for custom_stat filtering.
+    /// The `sender_id` helps to differentiate between clients when multiple are spawned.
+    client: u32,
+    /// Used for `custom_stat` filtering.
+    stat: Cow<'static, str>,
 }
 
+/// The state for this monitor.
 #[derive(Clone)]
 struct State {
     registry: Arc<Registry>,
diff --git a/libafl/src/monitors/tui/mod.rs b/libafl/src/monitors/tui/mod.rs
index 6e5944f322..77cbbe0ee9 100644
--- a/libafl/src/monitors/tui/mod.rs
+++ b/libafl/src/monitors/tui/mod.rs
@@ -1,4 +1,6 @@
-//! Fancy-looking terminal UI monitor, similar to AFL, based on [ratatui](https://ratatui.rs/)
+//! [`TuiMonitor`] is a fancy-looking TUI monitor similar to `AFL`.
+//!
+//! It's based on [ratatui](https://ratatui.rs/)
 
 use alloc::{borrow::Cow, boxed::Box, string::ToString};
 use core::cmp;
@@ -126,10 +128,15 @@ impl TimedStats {
 #[cfg(feature = "introspection")]
 #[derive(Debug, Default, Clone)]
 pub struct PerfTuiContext {
+    /// Time spent in the scheduler
     pub scheduler: f64,
+    /// Time spent in the event manager
     pub manager: f64,
+    /// Additional time
     pub unmeasured: f64,
+    /// Time spent in each individual stage
     pub stages: Vec<Vec<(String, f64)>>,
+    /// Time spent in each individual feedback
     pub feedbacks: Vec<(String, f64)>,
 }
 
@@ -234,6 +241,7 @@ pub struct ItemGeometry {
 }
 
 impl ItemGeometry {
+    /// Create a new [`ItemGeometry`]
     fn new() -> Self {
         Self {
             stability: "0%".to_string(),