The 16 SaaS Companies Ranked by Spend from Houston (2026)
Houston is home to 16 recorded SaaS and AI products headquartered here, led by SSL.com (0.01% of recorded software spend). The order uses recorded software spend share in the Cledara dataset; directory inclusion does not establish current paid usage. Data as of .
What this ranking measures
Location is the recorded headquarters, which may differ from where a company was founded or where its customers operate. Vendors are ordered by trailing-12-month software spend share in the Cledara dataset. Recorded products without a current paid observation remain in the directory; inclusion alone does not establish current paid usage.
Annual rank changes use the separate global popularity rank, based on payment activity. Missing calendar endpoints stay unavailable. Founding year, employee and funding fields are recorded enrichment facts, which can be incomplete or historical. Full source data is available from the CSV and JSON download links.
The headline and leader facts describe the complete published location. Search and category selections apply to the directory and its downloads.
Top SaaS companies from Houston
| # | Product | Category | Founded | Employees | Funding | 12-mo activity rank change |
|---|---|---|---|---|---|---|
| 1 |  SSL.com SSL.com is a platform for digital document and code signing. It securely stores certificates and signing keys in FIPS-compliant hardware appliances accessible via a web app or API. eSigner supports integration with services like DocuSign and Adobe Sign, providing globally trusted signatures and long-term validation for PDF documents. | IT & Security | 2004 | 11-50 employees | +385 | |
| 2 |  cPanel cPanel is a control panel designed for the web hosting industry. | Engineering & DevOps | 1996 | 501-1,000 employees | -248 | |
| 3 |  OptiSigns OptiSigns is a digital signage platform that manages content across various display types, supporting multiple file formats and real-time updates. | Marketing & Growth | 2016 | 51-200 employees | +236 | |
| 4 |  Plesk Plesk is a web hosting control panel that simplifies website and server management. It offers a wide range of tools and features for managing web servers, websites, applications, email, and security settings from a centralized and user-friendly interface. Plesk aims to streamline website and server management tasks, improve efficiency, and enhance security for users. | Engineering & DevOps | 2001 | 501-1,000 employees | +979 | |
| 5 |  WHMCS WHMCS is a client management, billing, and support solution designed for web hosting businesses. It streamlines and automates various aspects of running a hosting business, including invoicing, provisioning, domain management, and customer support. | Finance & Accounting | 2005 | 501-1,000 employees | ||
| 6 |  2Chat 2Chat offers an automation platform for WhatsApp / messaging, enabling businesses to manage multi-agent chats, bots, and workflows. It allows integration via API and supports messaging automation across channels. | Collaboration & Productivity | 2022 | 2-10 employees | ||
| 7 |  ChartExpo ChartExpo is a data visualization tool that simplifies the process of transforming data from spreadsheets into insightful charts. It enhances data security and privacy by enabling chart creation directly within familiar spreadsheet applications like Google Sheets and Microsoft Excel. | Data & Analytics | 2014 | 51-200 employees | ||
| 8 |  ClickMagick ClickMagick is a web-based software tool that provides various features for digital marketers to track, optimize, and manage their online marketing campaigns. | Marketing & Growth | 2014 | |||
| 9 | HostGator | Engineering & DevOps | 501-1,000 employees | |||
| 10 |  IT DUKES IT Dukes is a managed IT services provider offering IT support, cloud services, cybersecurity and telephony solutions for small and mid-size organisations. They deliver outsourced IT, helpdesk support and infrastructure management. | IT & Security | 2016 | 11-50 employees | ||
| 11 |  Payfunnels Payfunnels is a web-based application that enables businesses to accept online payments through Stripe without requiring coding skills or a website. It supports one-time charges, recurring payments, and custom payment plans. All transactions are secured via HTTPS/SSL connections. | Marketing & Growth | 2015 | 2-10 employees | ||
| 12 |  symplr symplr provides governance, risk, and compliance (GRC) and workforce management software for healthcare organizations, including credentialing, provider management, vendor & contract management, scheduling, and analytics. | Legal, Risk & Compliance | 2006 | 1,001-5,000 employees | ||
| 13 |  VisualCron VisualCron is a Windows automation tool that schedules tasks, integrates systems, and processes files using protocols like SFTP and SQL. | Marketing & Growth | 2006 | 51-200 employees | ||
| 14 | Datawarehouse.io | Data & Analytics | 2021 | 2-10 employees | ||
| 15 | Outscraper | Data & Analytics | 2018 | 11-50 employees | ||
| 16 | Typesense | Engineering & DevOps | 2016 | 11-50 employees |
Houston startups by size and funding
The largest SaaS company from Houston by headcount is symplr (1,001-5,000 employees).
The newest entrant is 2Chat (founded 2022).
What Houston startups build
- Engineering & DevOps 4
- Marketing & Growth 4
- Data & Analytics 3
- IT & Security 2
- Finance & Accounting 1
- Collaboration & Productivity 1
- Legal, Risk & Compliance 1
Houston vs the United States
Houston accounts for 0% of the 3,551 recorded SaaS products headquartered in the United States. See the full United States ranking →
Frequently asked questions
Which SaaS vendors lead the Houston spend ranking?
SSL.com, cPanel and OptiSigns are the leading SaaS products headquartered in Houston, ordered by recorded software spend share in the Cledara dataset. Last updated 26 October 2026, 22:43 UTC.
How many SaaS companies are based in Houston?
16 SaaS and AI products have recorded headquarters in Houston in this directory. Products without current paid observations remain included. This is a Cledara dataset count, not a census of local companies.
Which Houston vendors gained payment-activity rank?
OptiSigns and Plesk show the strongest global payment-activity rank gains among vendors headquartered in Houston over three calendar months.
How is this different from other Houston startup lists?
This directory groups vendors by recorded headquarters and orders them by trailing-12-month software spend share in Cledara's customer dataset. The annual change column uses the separate global payment-activity rank. Neither measure is a distinct-customer adoption percentage.