Best system plugins for WordPress
The most popular system plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Planyo online reservation system leads with 400+ active installs, ahead of Library Management System (200+) and Simple System Status (100+). All 29 plugins tagged “system” are below, with figures from WordPress.org that update every day.
Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.
Research this niche or see all plugins.
Top 10 system plugins
- 1.
Planyo online reservation systemThe most installed system plugin, with 400+ active installs. No reviews yet, updated 7 months ago. Tested only up to WordPress 6.9.11.
- 2.
Library Management System200+ active installs. Rated 4.4 from 14 reviews, updated 2 weeks ago.
- 3.
Simple System Status100+ active installs. Rated 5.0 from 5 reviews, last updated 4 years ago. Tested only up to WordPress 6.0.18.
- 4.
Email Notifications for Updates100+ active installs. No reviews yet, last updated 1 year ago. Tested only up to WordPress 6.6.11.
- 5.
CL WP Info90+ active installs. Only 3 reviews so far, updated 5 months ago.
- 6.
Diagnostic Glance50+ active installs. Only 2 reviews so far, updated 10 months ago. Tested only up to WordPress 6.9.11.
- 7.
Scheduly40+ active installs. Only 1 review so far, last updated 2 years ago. Tested only up to WordPress 6.4.14.
- 8.
System Requirements Check30+ active installs. Only 2 reviews so far, updated 5 months ago. Tested only up to WordPress 6.9.11.
- 9.
CL Simplest SMTP20+ active installs. Only 4 reviews so far, updated 5 months ago.
- 10.
System Info10+ active installs. No reviews yet, last updated 2 years ago. Tested only up to WordPress 6.6.11.
All 29 plugins tagged “system”
Planyo online reservation system
Up in the last 7 days:15#9,887by xtreeme7 months ago
This plugin embeds the Planyo online reservation system.
- Installs
- 400+
- Rating
- –
- Downloads
- 11/day
Library Management System
Up in the last 7 days:108#11,724by Online Web Tutor20 days ago
The best library management system plugin for WordPress — manage books, borrowers, branches, bookcases, sections, borrow/return workflows and receipts …
- Installs
- 200+
- Rating
- 4.4(14)
- Downloads
- 22/day
Simple System Status
Up in the last 7 days:43#13,654by Leo Gopal4 years ago
View Information about your WordPress Configuration (Defaults, Themes, Plugins) and Server Information that is useful for debugging and support.
- Installs
- 100+
- Rating
- 5.0(5)
- Downloads
- 47/day
Email Notifications for Updates
Up in the last 7 days:78#14,286by AWEOS GmbH1 year ago
Automatic E-mail notifications for outdated plugins. Select multiple recipients and use our beautiful E-mail layout with plugin thumbnails.
- Installs
- 100+
- Rating
- –
- Downloads
- 11/day
CL WP Info
Up in the last 7 days:111#16,828by Carlos Longarela5 months ago
Show us information about WordPress install, PHP, Database and Hosting Server
- Installs
- 90+
- Rating
- 5.0(3)
- Downloads
- 0/day
Diagnostic Glance
Up in the last 7 days:70#20,854by LaughterOnWater10 months ago
Diagnostic summary of WordPress setup including themes, plugins, system config, and site stats -- formatted for support forum posting.
- Installs
- 50+
- Rating
- 3.0(2)
- Downloads
- 0/day
Scheduly
Down in the last 7 days:62#22,341by Jack Sanchez2 years ago
Add a widget to your website to let clients reserve appointments or equipment and pay online.
- Installs
- 40+
- Rating
- 5.0(1)
- Downloads
- 0/day
System Requirements Check
Down in the last 7 days:445#23,338by Ethan Lin5 months ago
Checks for the specified version of the operating systems, web browsers, screen resolution, IP address, Flash Player, JRE, cookie, and Javascript.
- Installs
- 30+
- Rating
- 4.5(2)
- Downloads
- 0/day
CL Simplest SMTP
#25,741by Carlos Longarela5 months ago
Send mails throught SMTP server. Simplest option to send mail when hosting or server do not permits send mail or is missconfigured.
- Installs
- 20+
- Rating
- 5.0(4)
- Downloads
- 11/day
System Info
Up in the last 7 days:109#29,923by uri2 years ago
The System Info plugin generates a composer.json file and provides system information based on the active plugins and theme in your WordPress installa …
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
Support Ticket System
Up in the last 7 days:975#31,814by en0x9 years ago
Simple, fast and responsive ticket system for the Front-End to receive and store Problems of Customers or Visitors, with a great search function.
- Installs
- 10+
- Rating
- 4.5(4)
- Downloads
- 0/day
MultiSite System Cron
Down in the last 7 days:1,500#33,032by Pau Iglesias11 years ago
For WordPress MultiSite installs, allows accurate and private system crontab requests instead of classic WP-Cron.
- Installs
- 10+
- Rating
- 5.0(2)
- Downloads
- 0/day
System Report
Up in the last 7 days:11,224#36,436by Aaron Holbrook9 years ago
Quickly identify important aspects of your server, PHP, WordPress installation, theme and plugins
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
Section Posts Widget
#43,775by andrew.eatherington11 years ago
A widget that displays a list of posts related to a particular section. Sections are enabled using the Cornerstone plugin.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
LogicalDOC WordPress Explorer
Up in the last 7 days:1,038#45,132by Cristian Fulger4 years ago
LogicalDOC WordPress Explorer realizes the integration between LogicalDOC DMS and WordPress
- Installs
- 10+
- Rating
- 3.0(2)
- Downloads
- 1/day
PHP Floating Point DoS Attack Workaround
Down in the last 7 days:5,762#45,437by Sergey Biryukov14 years ago
Prevents 32-bit PHP versions from hanging when processing a request containing 2.2250738585072011e-308 value.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
Server Information
Down in the last 7 days:5,198#45,781by miunosoft11 years ago
Allows you to send server information via email.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
Live Chat
#46,797by mndpsingh2879 years ago
Live Chat plugin is a fully functional free Chat plugin, Add Live Chat plugin to your site to chat by sending emotions and attachments with message n …
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 1/day
Planfy Online Booking
Down in the last 7 days:813#48,172by Planfy3 years ago
Allow customers to book services online. Accept online payments, automate sms reminders and more.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
PB Modular Pattern System
Up in the last 7 days:6,048#50,209by Pat Bloom6 years ago
MVC / BEM based elemental and modular development system based on 6 patterns
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
Light & Dark Mode Switcher
Up in the last 7 days:13,485#51,100by Senthilprabu Ponnusamy1 year ago
Light & Dark Mode Switcher is a user-friendly WordPress plugin that lets visitors easily toggle between light and dark themes on your website.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
Reservation System
Down in the last 7 days:12,483#61,427by iffikhan305 years ago
Reservation System submit your detail for specific post and fetch result current month calendar. It's easy to use just copy shortcode and show th …
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
WOW Best WP Lightweight
Up in the last 7 days:4,779#63,262by baonguyenyam4 years ago
Boost your site's speed and performance. Best WP Lightweight help you configure your websites without any coding knowledge required.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
System Usability Scale
Down in the last 7 days:3,193#66,678by gparrotta5 years ago
Allow users to submit System Usability Scale's questionnaires into your website.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day