- Free tier$2.00 / moFTV 20
SendGrid
Twilio SendGrid provides an Email API and SMTP service for sending transactional and application email, along with marketing campaign tools for creating and managing email campaigns. The product is pr...
- Free tier$3.00 / moFTV 51
SendPulse
SendPulse is a multi-channel marketing automation platform that combines email marketing, chatbots, CRM, landing pages, pop-ups, web push notifications, and online course tools in one account. The fre...
- Free tier$26 / moFTV 56
Sentry
Sentry is an application monitoring platform that helps development teams detect, diagnose, and resolve software issues across the full application lifecycle. It combines error monitoring, performance...
- Always free$1.00 / moFTV 7

SEO Test
SEO Test is a web-based on-page SEO checker that accepts a URL and returns a free SEO test result. The landing page indicates a simple input-and-analyze workflow rather than a multi-step audit suite.
- Free tier$3.00 / moFTV 51

Serveo
Serveo is a remote port forwarding service that exposes local servers to the internet through SSH, WireGuard, or a browser extension. It provides a public encrypted URL that routes traffic to localhost without requiring a proprietary client or download.
- Always freeUnboundedFTV 100

ServerAvatar
ServerAvatar is a cloud server management panel for PHP, WordPress, Laravel, Node.js, and related web applications. It connects to existing VPS or cloud instances and provides a web dashboard for serv...
- Free tier$29 / moFTV 59

ServerBuddy
ServerBuddy is a native macOS application for managing Linux servers with a clean, point-and-click interface. It brings common administration tasks into one place so users can monitor system health, connect over SSH, and handle day-to-day server operations without relying entirely on the terminal.
- Free tier$2.00 / moFTV 50
Servervana
Servervana is a website performance and uptime monitoring service that checks HTTP, DNS, SSL, and API endpoints. It collects historical data, shows page loading behavior, and provides status pages and alert routing for issue detection and escalation.
- Free tier$1.50 / moFTV 39
Sflow
Sflow is a web-based workflow and ticketing platform from Easiio that combines project management, service flow, and customer support use cases. The pricing page shows a free plan for up to 10 users p...
- Free tier$3.00 / moFTV 39

Shadcn Theme Generator
Shadcn Theme Generator is a web-based theme editor for shadcn/ui components, blocks, and templates. It provides real-time customization for colors, typography, and theme presets, plus import and export workflows for moving themes between projects.
- Free tier$40 / moFTV 69

Shake
Shake is a bug and crash reporting platform for mobile apps and websites. It provides SDKs for iOS, Android, React Native, Flutter, and web, and automatically attaches data such as device model, HTTP ...
- Free tier$25 / moFTV 55
Sheetson
Sheetson is a REST API layer for Google Sheets. It proxies Google Sheets data into object-based JSON responses so developers can read and query spreadsheet content without working directly with the Google Sheets API.
- Always freeUnboundedFTV 90
Shields.io
Shields.io is a badge generation service that provides dynamic and static badges for software projects. It renders badge images from service metrics and custom text, and also offers an NPM library for generating badges inside applications.
- Free tier$4.00 / moFTV 53

Shortcut
Shortcut is a project management platform for software teams. It provides kanban boards, backlogs, sprints, roadmaps, docs, reporting, objectives, automations, and APIs for tracking work from idea to release.
- Free trial$25 / moFTV 37

Simperium
Simperium is a cross-platform data sync service for application data. It provides APIs and libraries for iOS, Android, JavaScript, Python, Ruby, HTTP, and WebSocket clients so apps can keep data synchronized across platforms.
- Free tier$20 / moFTV 63
Simple Analytics
Simple Analytics is a web analytics service that tracks website visitors, page views, referrers, UTM sources, countries, events, and conversion-related activity through a lightweight script. It provid...
- Free tier$1.50 / moFTV 47

Simple Observability
Simple Observability is a hosted server monitoring platform that collects metrics, logs, and cron job results through a single agent installed with one command. The agent sends data outbound over HTTPS to the vendor cloud, and configuration is managed from a web UI rather than local config files.
- Free tier$10 / moFTV 56
SimpleBackups
SimpleBackups is a backup automation service for servers, databases, cloud storage, and SaaS applications. It schedules and monitors backup jobs from a single dashboard, supports restore workflows, and exposes an API for automation and integrations.
- Free trialFTV 31

SimpleLocalize
SimpleLocalize is a translation management platform for software projects. It provides a web-based translation editor, translation hosting, CLI synchronization, integrations for IDEs and GitHub, and workflow features such as auto-translation, QA checks, public suggestions, and automations.
- Free tier$99 / moFTV 74
SimplePDF
SimplePDF is a browser-based PDF editor that can be embedded into a website or app through a React component, iframe, vanilla JavaScript, WordPress plugin, or Bubble plugin. It lets end users fill out...
- Free creditFTV 29
Simplescraper
Simplescraper is a web scraping tool that extracts structured data and URLs from websites through a Chrome extension, dashboard, and API. It supports browser scraping, cloud scraping, scheduled jobs, bulk scraping, screenshots, markdown extraction, and AI-assisted extraction from prompts.
- Free tier$5.00 / moFTV 54

Sirv
Sirv is an image CDN and image management service that stores source images and serves transformed variants through a CDN. It supports dynamic imaging, resizing, optimization, responsive images, image zoom, and 360 spin viewers, with REST API and S3 access for file management.
- Free tier$2.00 / moFTV 47
SiteDots
SiteDots is a Chrome extension for leaving contextual comments, feedback, and fixes directly on live webpages. It attaches notes to specific elements on the page while the user browses, so feedback stays tied to the actual site rather than screenshots or external mockups.
- Free tier$10 / moFTV 58
Skylight
Skylight is a smart profiler for Ruby and Rails applications. It collects performance traces from web requests and background jobs, then turns them into endpoint-level views, trends, and deploy comparisons.
- Always freeUnboundedFTV 70

Skypack
Skypack is a CDN for optimized npm packages that serves JavaScript modules directly from URLs such as https://cdn.skypack.dev/package-name. It preoptimizes packages for browser use and supports packag...
- Free tier$3.00 / moFTV 41

Skyvia
Skyvia is a cloud data integration platform that combines data integration, automation, backup, query, and connectivity features in one service. It supports no-code data integration, ELT/ETL-style pip...
- Free tier$2.50 / moFTV 53
Slab
Slab is a hosted knowledge base and wiki platform for internal documentation. It provides a web editor for creating posts and topics, organization features such as folders, tags, and Topics, and unified search across Slab content and connected tools.
- Free tier$3.00 / moFTV 41

Slack
Slack is a business communication and collaboration platform that brings team messaging, channels, huddles, file sharing, and workflow automation into one workspace. It is designed to help organizations coordinate work, share context, and connect people with apps, data, and AI agents.
- Free tier$1.50 / moFTV 33
Slidesgo
Slidesgo is a presentation template platform that helps users create polished slides for Google Slides, PowerPoint, and Canva. It offers a large library of editable templates across business, educatio...
- Free tier$2.00 / moFTV 49
SlidesGPT
SlidesGPT is an AI-powered presentation generator that turns text, PDFs, and other source material into professional slide decks in seconds. It is designed to help individuals and teams create, edit, ...
- Free trial$9.00 / moFTV 60
Slite
Slite is an AI-powered knowledge base for team documentation and internal search. It provides a collaborative editor, document verification, recurring docs, templates, integrations, and an Ask feature...
- Free tier$3.00 / moFTV 39
Smart Checklist for Jira
Smart Checklist for Jira is a Jira add-on that adds to-do lists to Jira work items and supports checklist templates for recurring tasks. The product can automatically add and update checklists based on triggers and criteria, and it exposes checklist progress in Jira views and dashboards.
- Free tier$2.50 / moFTV 47
Smart Grow Logs
Smart Grow Logs is a centralized logging service for Android, iOS, Flutter, Web, Node.js, Cloudflare Workers, Hono, macOS, tvOS, Windows, and Go applications. It provides SDKs and plugins for sending ...
- Free tier$2.50 / moFTV 53
Smart Grow Vault App
Smart Grow Vault App is a secrets management platform for development teams. It stores environment variables, API keys, certificates, keystores, provisioning profiles, and other credential files in an encrypted vault, with access through a web interface, CLI, and REST API.
- Free tier$44 / moFTV 57

Smart Parse
Smart Parse is a CSV-to-API integration service that maps CSV files to REST API payloads. It provides a mapping editor with sample-line previews, contextual suggestions, utility functions for casting,...
- Free tier$1.99 / moFTV 47

Smartcar
Smartcar is a car API platform that provides connected vehicle data and commands through a single integration. Its platform includes Smartcar Connect for user consent, vehicle signals for reading vehi...
- Free tier$1.50 / moFTV 47

SmartForms
SmartForms is a hosted form submission endpoint service that accepts HTML form posts and forwards submissions to configured destinations without requiring backend code. It supports email delivery, Slack, Telegram, Zapier, webhooks, custom redirect handling, spam protection, and file uploads.
- Always freeUnboundedFTV 100
SMSGate
SMSGate is an open-source SMS gateway for Android devices that exposes a REST API, client libraries, and a CLI for sending and receiving SMS messages through a connected phone. It supports Android 5.0...
- Free tier$4.00 / moFTV 50

SnapShooter
SnapShooter is a backup service for servers, databases, files, and applications. It supports scheduled snapshots for DigitalOcean Droplets and Volumes, database backups for MySQL, PostgreSQL, MongoDB,...
- Free tier$25 / moFTV 66
Socket
Socket is a software supply chain security platform that scans dependencies and package updates for malicious behavior, vulnerabilities, license issues, and other risk signals across major package reg...
- Free tier$2.00 / moFTV 36
Sofodata
Sofodata is a service for creating secure RESTful APIs from CSV files. Users upload a CSV file through the web UI or the Sofodata CLI, and the platform automatically provisions and hosts an API in the cloud so the data can be accessed through standard API clients.
- Free tier$6.00 / moFTV 53
Solo
Solo is a website builder that generates a business website from a few inputs and supports publishing a site on a custom domain. The product includes AI-assisted section generation, initial image sele...
- Free tier$4.00 / moFTV 55
sourcehut
sourcehut is a software development platform built around open source, standards-based workflows, and minimal overhead. It brings together hosted source control, continuous integration, mailing lists,...
- Free tier$2.00 / moFTV 45

Spacelift
Spacelift is an infrastructure orchestration platform for managing IaC and GitOps workflows across Terraform, OpenTofu, CloudFormation, Pulumi, and Kubernetes. It connects to cloud accounts, supports ...
- Always freeFTV 10

SQLable
SQLable is a website that provides developer tools and posts related to SQL and databases. The site includes utilities for formatting SQL, validating queries, working with regular expressions, generating data, and comparing or transforming CSV files.
- Free tier$5.00 / moFTV 54

Squidex
Squidex is an open source headless CMS that exposes content through a REST API and a GraphQL endpoint. The platform supports content versioning, workflow rules, integrations triggered by events, backup and restore, and deployment through Docker, binaries, or Kubernetes Helm charts.
- Free tier$2.00 / moFTV 37
SSL Gateway
SSL Gateway is OVHcloud’s managed HTTPS termination service for websites. It provisions and renews TLS certificates automatically, applies OVHcloud-managed security updates, and can load balance traffic across up to 3 server IP addresses.
- Always freeUnboundedFTV 90
SSL Server Test
SSL Server Test is a free online service from Qualys SSL Labs that performs a deep analysis of the configuration of a public SSL/TLS web server. Users submit a hostname and the service returns a report on certificate and protocol configuration.
- Free tier$3.00 / moFTV 42
StackBlitz
StackBlitz is a browser-based development platform for creating and running web applications. It uses WebContainers to boot Node.js development environments inside the browser tab, so code executes locally in the browser rather than on remote IDE servers.
- Free tier$3.00 / moFTV 51
Stackby
Stackby is a no-code spreadsheet-style database platform that combines tables, views, forms, automations, API connectors, and AI fields in a single workspace. It supports grid, kanban, gallery, calend...
- Always freeUnboundedFTV 100
Stamen Maps
maps.stamen.com is a web map tile viewer for Stamen map styles, including Toner, Terrain, and Watercolor. It presents interactive map previews and links to style variants such as labels, lines, background, lite, dark, and blacklite for Toner, plus standard, labels, lines, and background for Terrain.
- Free tier$3.00 / moFTV 50

Statcounter
Statcounter is a web analytics service that tracks website visits by inserting a small code snippet into a site. It provides traffic trend charts, an analytics dashboard, real-time visitor feeds, sess...
- Free tier$3.00 / moFTV 51
Static Forms
Static Forms is an HTML form backend for static sites. It accepts form submissions at a hosted endpoint, then forwards them to email with spam filtering, file attachments, webhooks, dashboard storage, and optional AI replies.
- Always freeUnboundedFTV 100

Statically
Statically is a free global CDN for Git repositories and npm packages. It serves optimized files from GitHub, GitLab, Bitbucket, GitHub Gist, and npm through fixed CDN URL patterns, allowing developers to reference repository assets directly from a global edge network.
- Free tier$75 / moFTV 74

Statsig
Statsig is a product development platform that combines experimentation, feature flags, product analytics, session replay, web analytics, and infrastructure analytics in one service. It provides SDKs ...
- Free tier$3.00 / moFTV 51

StatusCake
StatusCake is a website monitoring service that checks uptime, page speed, SSL certificates, domains, and servers from multiple locations. It provides scheduled checks, alerting through integrations, and reporting for teams that need to track availability and performance.
- Free tier$18 / moFTV 61

StatusGator
StatusGator is a cloud monitoring and status page aggregator that tracks the availability of third-party services, cloud infrastructure, hosted applications, and websites. It combines vendor status ag...
- Free tier$29 / moFTV 55

Statuspage
Statuspage is an incident communication platform from Atlassian that helps organizations keep users, customers, and employees informed about service health in real time.
- Always freeUnboundedFTV 90
Statuspile
Statuspile is an open-source status dashboard for tracking the status pages of multiple service providers in one place. It provides a web dashboard where users can add and remove providers, save their configuration through Auth0 login, and fork the code from GitHub.
- Free tier$3.00 / moFTV 49
Stickies
Stickies is a visual project management and collaboration platform that provides sticky-note style walls for organizing work, notes, ideas, and content. It supports multiple views and filters, labels ...