diff --git a/contrib/deviceatlas/dac.h b/contrib/deviceatlas/dac.h
index 4e0189a..92a9396 100644
--- a/contrib/deviceatlas/dac.h
+++ b/contrib/deviceatlas/dac.h
@@ -70,7 +70,7 @@
 enum da_severity {
     DA_SEV_FATAL, /* The operation will not continue, and the operation will return an error. */
     DA_SEV_ERROR, /* An error occurred, but the API call will return at least some valid information */
-    DA_SEV_WARN,  /* An unexpected event occured, but the system dealt with it */
+    DA_SEV_WARN,  /* An unexpected event occurred, but the system dealt with it */
     DA_SEV_INFO   /* An informational message. */
 };
 /* Forward references to tagged types */
diff --git a/contrib/mod_defender/spoa.c b/contrib/mod_defender/spoa.c
index 94e6d6b..079e880 100644
--- a/contrib/mod_defender/spoa.c
+++ b/contrib/mod_defender/spoa.c
@@ -192,7 +192,7 @@
 	DEBUG(frame->worker, "<%lu> Supported versions : %.*s",
 	      frame->client->id, (int)sz, str);
 
-	/* TODO: Find the right verion in supported ones */
+	/* TODO: Find the right version in supported ones */
 
 	ret  = (p - *buf);
 	*buf = p;
diff --git a/contrib/modsecurity/modsec_wrapper.c b/contrib/modsecurity/modsec_wrapper.c
index a3a2541..7ae831e 100644
--- a/contrib/modsecurity/modsec_wrapper.c
+++ b/contrib/modsecurity/modsec_wrapper.c
@@ -140,7 +140,7 @@
 
 	modsec_server = modsecInit();
 	if (modsec_server == NULL) {
-		LOG(&null_worker, "ModSecurity initilisation failed.\n");
+		LOG(&null_worker, "ModSecurity initialisation failed.\n");
 		return -1;
 	}
 
@@ -153,7 +153,7 @@
 
 	modsec_config = modsecGetDefaultConfig();
 	if (modsec_config == NULL) {
-		LOG(&null_worker, "ModSecurity default configuration initilisation failed.\n");
+		LOG(&null_worker, "ModSecurity default configuration initialisation failed.\n");
 		return -1;
 	}
 
diff --git a/contrib/modsecurity/spoa.c b/contrib/modsecurity/spoa.c
index 225db29..20916fd 100644
--- a/contrib/modsecurity/spoa.c
+++ b/contrib/modsecurity/spoa.c
@@ -197,7 +197,7 @@
 	DEBUG(frame->worker, "<%lu> Supported versions : %.*s",
 	      frame->client->id, (int)sz, str);
 
-	/* TODO: Find the right verion in supported ones */
+	/* TODO: Find the right version in supported ones */
 
 	ret  = (p - *buf);
 	*buf = p;
diff --git a/contrib/plug_qdisc/plug_qdisc.c b/contrib/plug_qdisc/plug_qdisc.c
index 606a834..bc47f5d 100644
--- a/contrib/plug_qdisc/plug_qdisc.c
+++ b/contrib/plug_qdisc/plug_qdisc.c
@@ -10,7 +10,7 @@
  * XXX Please, first note that this code is not safe. XXX
  * It was developed fast so that to reproduce a bug.
  * You will certainly have to adapt it to your application.
- * But at least it gives an idea about how to programatically use plug
+ * But at least it gives an idea about how to programmatically use plug
  * queueing disciplines.
  */
 
diff --git a/contrib/prometheus-exporter/service-prometheus.c b/contrib/prometheus-exporter/service-prometheus.c
index 6e7eca0..8ffeb82 100644
--- a/contrib/prometheus-exporter/service-prometheus.c
+++ b/contrib/prometheus-exporter/service-prometheus.c
@@ -73,7 +73,7 @@
 #define PROMEX_FL_SCOPE_ALL (PROMEX_FL_SCOPE_GLOBAL|PROMEX_FL_SCOPE_FRONT|PROMEX_FL_SCOPE_BACK|PROMEX_FL_SCOPE_SERVER)
 
 /* The max length for metrics name. It is a hard limit but it should be
- * enougth.
+ * enough.
  */
 #define PROMEX_MAX_NAME_LEN 128
 
@@ -615,7 +615,7 @@
 const struct ist promex_inf_metric_desc[INF_TOTAL_FIELDS] = {
 	[INF_NAME]                           = IST("Product name."),
 	[INF_VERSION]                        = IST("HAProxy version."),
-	[INF_RELEASE_DATE]                   = IST("HAProxy realease date."),
+	[INF_RELEASE_DATE]                   = IST("HAProxy release date."),
 	[INF_NBTHREAD]                       = IST("Configured number of threads."),
 	[INF_NBPROC]                         = IST("Configured number of processes."),
 	[INF_PROCESS_NUM]                    = IST("Relative process id, starting at 1."),
@@ -627,7 +627,7 @@
 	[INF_POOL_USED_MB]                   = IST("Total amount of memory used in pools (in bytes)."),
 	[INF_POOL_FAILED]                    = IST("Total number of failed pool allocations."),
 	[INF_ULIMIT_N]                       = IST("Maximum number of open file descriptors; 0=unset."),
-	[INF_MAXSOCK]                        = IST("Maximum numer of open sockets."),
+	[INF_MAXSOCK]                        = IST("Maximum number of open sockets."),
 	[INF_MAXCONN]                        = IST("Maximum number of concurrent connections."),
 	[INF_HARD_MAXCONN]                   = IST("Initial Maximum number of concurrent connections."),
 	[INF_CURR_CONN]                      = IST("Number of active sessions."),
@@ -1140,7 +1140,7 @@
 /* Concatenate the <prefix> with the field name using the array
  * <promex_st_metric_names> and store it in <name>. The field type is in
  * <appctx->st2>. This function never fails but relies on
- * <PROMEX_MAX_NAME_LEN>. So by sure the result is small enougth to be copied in
+ * <PROMEX_MAX_NAME_LEN>. So by sure the result is small enough to be copied in
  * <name>
  */
 static void promex_metric_name(struct appctx *appctx, struct ist *name, const struct ist prefix)
@@ -1252,7 +1252,7 @@
 }
 
 
-/* Dump global metrics (prefixed by "haproxy_process_"). It returns 1 on sucess,
+/* Dump global metrics (prefixed by "haproxy_process_"). It returns 1 on success,
  * 0 if <htx> is full and -1 in case of any error. */
 static int promex_dump_global_metrics(struct appctx *appctx, struct htx *htx)
 {
@@ -1465,7 +1465,7 @@
 	goto end;
 }
 
-/* Dump frontends metrics (prefixed by "haproxy_frontend_"). It returns 1 on sucess,
+/* Dump frontends metrics (prefixed by "haproxy_frontend_"). It returns 1 on success,
  * 0 if <htx> is full and -1 in case of any error. */
 static int promex_dump_front_metrics(struct appctx *appctx, struct htx *htx)
 {
@@ -1648,7 +1648,7 @@
 	goto end;
 }
 
-/* Dump backends metrics (prefixed by "haproxy_backend_"). It returns 1 on sucess,
+/* Dump backends metrics (prefixed by "haproxy_backend_"). It returns 1 on success,
  * 0 if <htx> is full and -1 in case of any error. */
 static int promex_dump_back_metrics(struct appctx *appctx, struct htx *htx)
 {
@@ -1892,7 +1892,7 @@
 	goto end;
 }
 
-/* Dump servers metrics (prefixed by "haproxy_server_"). It returns 1 on sucess,
+/* Dump servers metrics (prefixed by "haproxy_server_"). It returns 1 on success,
  * 0 if <htx> is full and -1 in case of any error. */
 static int promex_dump_srv_metrics(struct appctx *appctx, struct htx *htx)
 {
@@ -2243,7 +2243,7 @@
 	return -1;
 }
 
-/* Parse the query stirng of request URI to filter the metrics. It returns 1 on
+/* Parse the query string of request URI to filter the metrics. It returns 1 on
  * success and -1 on error. */
 static int promex_parse_uri(struct appctx *appctx, struct stream_interface *si)
 {
@@ -2401,7 +2401,7 @@
 	if (unlikely(si->state == SI_ST_DIS || si->state == SI_ST_CLO))
 		goto out;
 
-	/* Check if the input buffer is avalaible. */
+	/* Check if the input buffer is available. */
 	if (!b_size(&res->buf)) {
 		si_rx_room_blk(si);
 		goto out;
diff --git a/contrib/spoa_example/include/spoe_types.h b/contrib/spoa_example/include/spoe_types.h
index 8f93edd..a986227 100644
--- a/contrib/spoa_example/include/spoe_types.h
+++ b/contrib/spoa_example/include/spoe_types.h
@@ -100,7 +100,7 @@
 	SPOE_CTX_ERRS,
 };
 
-/* Errors triggerd by SPOE applet */
+/* Errors triggered by SPOE applet */
 enum spoe_frame_error {
 	SPOE_FRM_ERR_NONE = 0,
 	SPOE_FRM_ERR_IO,
diff --git a/contrib/spoa_example/spoa.c b/contrib/spoa_example/spoa.c
index f32ac44..dd4a873 100644
--- a/contrib/spoa_example/spoa.c
+++ b/contrib/spoa_example/spoa.c
@@ -246,7 +246,7 @@
 	DEBUG(frame->worker, "<%lu> Supported versions : %.*s",
 	      frame->client->id, (int)sz, str);
 
-	/* TODO: Find the right verion in supported ones */
+	/* TODO: Find the right version in supported ones */
 
 	ret  = (p - *buf);
 	*buf = p;
diff --git a/contrib/spoa_server/ps_lua.c b/contrib/spoa_server/ps_lua.c
index e7de2d9..2d37d9b 100644
--- a/contrib/spoa_server/ps_lua.c
+++ b/contrib/spoa_server/ps_lua.c
@@ -396,7 +396,7 @@
 		lua_pop(L, 1);
 		return 0;
 	default:
-		fprintf(stderr, "lua unknonwn error: %s\n", lua_tostring(L, 0));
+		fprintf(stderr, "lua unknown error: %s\n", lua_tostring(L, 0));
 		lua_pop(L, 1);
 		return 0;
 	}
@@ -488,7 +488,7 @@
 		case LUA_ERRERR:
 			msg_fmt = msg_fmt ? msg_fmt : "Lua message handler error";
 		default:
-			msg_fmt = msg_fmt ? msg_fmt : "Lua unknonwn error";
+			msg_fmt = msg_fmt ? msg_fmt : "Lua unknown error";
 			msg = lua_tostring(L, -1);
 			if (msg == NULL)
 				msg = "Unknown error";
diff --git a/contrib/spoa_server/ps_python.c b/contrib/spoa_server/ps_python.c
index 0a9fbff..2dbe5ee 100644
--- a/contrib/spoa_server/ps_python.c
+++ b/contrib/spoa_server/ps_python.c
@@ -50,7 +50,7 @@
 
 	if (!PyArg_ParseTuple(args, "sO!", &name, &PyFunction_Type, &ref))
 		return NULL;
-	Py_XINCREF(ref); /* because the function is intenally refrenced */
+	Py_XINCREF(ref); /* because the function is internally referenced */
 
 	ps_register_message(&ps_python_bindings, name, (void *)ref);
 
@@ -602,7 +602,7 @@
 		}
 	}
 
-	/* Dictionnary { args = <list-of-args> } for the function */
+	/* Dictionary { args = <list-of-args> } for the function */
 
 	fkw = PyDict_New();
 	if (fkw == NULL) {
diff --git a/contrib/spoa_server/spoa.c b/contrib/spoa_server/spoa.c
index f36c3db..9a8ffd0 100644
--- a/contrib/spoa_server/spoa.c
+++ b/contrib/spoa_server/spoa.c
@@ -51,7 +51,7 @@
 	SPOE_FRM_T_AGENT_ACK
 };
 
-/* Errors triggerd by SPOE applet */
+/* Errors triggered by SPOE applet */
 enum spoe_frame_error {
 	SPOE_FRM_ERR_NONE = 0,
 	SPOE_FRM_ERR_IO,
@@ -501,7 +501,7 @@
 		return -1;
 	}
 
-	/* TODO: Find the right verion in supported ones */
+	/* TODO: Find the right version in supported ones */
 
 	return idx;
 }
@@ -822,7 +822,7 @@
 }
 
 /* This function is a little bit ugly,
- * TODO: improve the response without copying the bufer
+ * TODO: improve the response without copying the buffer
  */
 static int commit_agentack(struct worker *w)
 {
@@ -872,7 +872,7 @@
 	DEBUG("Notify frame received: stream-id=%u - frame-id=%u",
 	      w->stream_id, w->frame_id);
 
-	/* Prepara ack, if the processing fails tha ack will be cancelled */
+	/* Prepare ack, if the processing fails the ack will be cancelled */
 	prepare_agentack(w);
 
 	/* Loop on messages */
@@ -915,7 +915,7 @@
 			idx += i;
 		}
 
-		/* Lookup for existsing bindings. If no existing message
+		/* Lookup for existing bindings. If no existing message
 		 * where found, does nothing.
 		 */
 		for (msg = ps_messages; msg; msg = msg->next)
diff --git a/contrib/wireshark-dissectors/peers/packet-happp.c b/contrib/wireshark-dissectors/peers/packet-happp.c
index 980e290..33263b4 100644
--- a/contrib/wireshark-dissectors/peers/packet-happp.c
+++ b/contrib/wireshark-dissectors/peers/packet-happp.c
@@ -158,7 +158,7 @@
 };
 
 /* The types of data we can store in a stick table.
- * Same defintions as in HAProxy sources.
+ * Same definitions as in HAProxy sources.
  */
 enum {
 	STKT_DT_SERVER_ID,      /* the server ID to use with this stream if > 0 */
diff --git a/contrib/wurfl/wurfl/wurfl.h b/contrib/wurfl/wurfl/wurfl.h
index ca512da..3b450fc 100644
--- a/contrib/wurfl/wurfl/wurfl.h
+++ b/contrib/wurfl/wurfl/wurfl.h
@@ -322,7 +322,7 @@
 wurfl_error wurfl_updater_set_data_frequency(wurfl_handle hwurfl, wurfl_updater_frequency freq);
 
 // Set updater timeouts.
-// There are two timeouts, both in miliseconds : connection timeout and operation timeout.
+// There are two timeouts, both in milliseconds : connection timeout and operation timeout.
 // The values are mapped to CURL --connect-timeout and --max-time parameters
 // (after millisecs-to-secs conversion). Note that CURL sub millisecond timeouts don't work for
 // lack of a way to specify decimal values for timeout to curl (using 0.05 for example fails to work