What Prostack does

ProStack is a UK-based managed hosting provider, operated by Sharpstack Hosting Limited (company number 10076269, VAT GB261254229), founded in 2016 by CEO Martin Cole and headquartered in Stevenage, Hertfordshire, with a Berkhamsted-listed secondary location. The company sells fully managed shared hosting, Cloud VPS, Linux and Windows dedicated servers, reseller hosting, ecommerce-optimised hosting, and free charity hosting for UK-registered non-profits. ProStack is built around its proprietary Cito platform, a custom agency-focused control layer for managing multiple client sites, deployment profiles, SSH keys, and databases, which in March 2026 was extended with a Model Context Protocol (MCP) server that allows AI assistants (Claude Code, Claude Desktop, Cursor, ChatGPT) to deploy, debug, and manage Cito sites via OAuth-authenticated, whitelisted tools. Underlying infrastructure is best-of-breed: all-SSD storage, cPanel/WHM control panels, Cloudflare CDN and DDoS protection, LiteSpeed with LSCache, CloudLinux isolation, Restic backups, Monarx anti-malware, and SpamExperts/SpamTitan email filtering, monitored in real time via Prometheus with 40+ health checks per environment. The company carries ISO 27001:2022, ISO 9001:2015, and ISO 14001:2015 certifications and advertises a 100% uptime SLA on dedicated servers with a 6-minute average support response time.

The business model is subscription-based, with monthly and annual recurring revenue from hosting plans, domain registration, SSL certificates, and add-ons such as SpamExperts and penetration testing. Go-to-market is hybrid: a self-serve e-commerce portal for transparent pricing and immediate provisioning, complemented by a sales-led motion and a dedicated Agency Partner Programme plus a tiered affiliate scheme (10-20% commission on referred revenue for 12 months). Primary customer segments are digital agencies (multi-site, white-label, deployment automation) and e-commerce businesses (PCI-aware, high-traffic), with secondary segments in UK registered charities and small businesses/individuals. ProStack remains privately held and bootstrapped, with no external institutional investors, no parent company, no subsidiaries, and no disclosed M&A activity. Customer logos span a mix of large consumer brands used as testimonials (National Geographic Kids, A Place in the Sun, Pleasure Beach Blackpool, Ultimate Finish, Pro-Form Fitness) and mid-market digital agencies (Teapot Creative, Lionhouse, Nine Four, PS Website Design, Ménière's Society), and the company is independently rated 4.9/5 on Trustpilot across 84+ reviews.

Name

Prostack

Legal name

Sharpstack Hosting Limited

Website

https://prostack.uk

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

1–10 employees

Short description

ProStack is a UK-based managed hosting provider serving digital agencies and e-commerce businesses with subscription-based infrastructure. Its proprietary Cito platform offers agency-focused site management, including a Model Context Protocol server enabling AI assistants to deploy and manage hosting environments.

Ownership category

akta.pro rank

Product category

Managed Web Hosting

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182)

SIC

Services-Facilities Support Management Services (8744)

akta.pro primary industry

Managed Application Platforms (App PaaS & Runtime Services) (HDABAAAD)

akta.pro secondary industry

Cloud Infrastructure Entitlement Management (CIEM) (HDABAHAC)

Keywords

• Managed hosting services
• Dedicated server hosting
• Cloud VPS hosting
• Agency hosting platform
• Reseller web hosting

Headquarters

HQ city

Berkhamsted

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Infrastructure, Technology or R&D, Operations, Marketing or Sales

Revenue model

1. Managed Hosting Services: Recurring monthly and annual subscription revenue from managed hosting services including shared hosting, cloud VPS, dedicated servers, and agency hosting. Customers pay for server resources with fully managed support, monitoring, security, and backups included.
2. Domain Registration and Transfer: Revenue from domain name registration, renewal, and transfer services across multiple TLDs including .com, .uk, .co.uk, and specialty domains.
3. SSL Certificates and Security Products: Sales of SSL certificates including RapidSSL single domain (£55), RapidSSL Wildcard (£220), and Thawte Extended Validation (£242), plus PCI compliance scanning tools.
4. Affiliate Programme: Revenue share model where affiliates earn 10-20% commission based on number of referred customers over 12 months.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels7 records

Core offering

ProStack is a UK-based managed hosting provider that delivers fully managed web hosting infrastructure—including shared hosting, Cloud VPS, dedicated servers, reseller hosting, and ecommerce hosting—wrapped with 24/7 UK-based human support, proactive monitoring, security, and backups. Its proprietary Cito platform is purpose-built for digital agencies to manage multiple client sites, complemented by the Cito MCP Server that enables AI assistants to deploy and manage sites programmatically.

Product overview

ProStack is a UK-based managed hosting provider offering a comprehensive portfolio of hosting products and services built around its proprietary Cito platform. The core offering includes managed hosting services (with 24/7 UK support, monitoring, security, and backups), Cloud VPS, dedicated servers (Linux and Windows), shared hosting, and reseller hosting. The Cito platform serves as the agency-focused hosting control layer with AI assistant integration via MCP server. Additional services include ecommerce hosting, charity hosting (free for UK charities), penetration testing, Cloudflare integration, domain registration/transfer, SSL certificates, and Monarx malware protection. The product architecture combines proprietary technology (Cito platform, MCP server) with industry-standard infrastructure tools (cPanel, Cloudflare, LiteSpeed, Restic backups).

Differentiator

Problem solved

Functional benefit

Products and services

• Prostack Cito Proprietary agency hosting platform with a custom UI control panel providing server management, site deployment, database management, file management, SSH key management, and deployment profile configuration for digital agencies managing multiple client sites.
• Cloud VPS UK-based virtual private server hosting with full management and monitoring, offered in tiered plans (Cito Cloud 1-8 from £89 to £503.78/month) using AMD EPYC processors and all-SSD storage.
• Dedicated Servers Bare metal dedicated server hosting with Intel Xeon processors, all-SSD architecture, and a 100% uptime SLA. Tiers from Bronze (£201.12/month, 4 cores, 32GB RAM) to Platinum (£586.71/month, 48 cores, 128GB RAM, 4x1TB SSD).
• Shared Hosting UK shared hosting with cPanel control panel starting from £4.85/month across Bronze, Silver, Gold, and Platinum tiers, with free SSL, daily backups, and malware protection included.
• Charity Hosting Free shared hosting for registered UK charities meeting eligibility criteria, including cPanel, WordPress/Magento installation, daily backups, Let's Encrypt SSL, and 24/7 support, in exchange for a reciprocal link and logo.
• Managed Hosting Fully managed hosting services including 24/7 UK-based support (6-minute average response time), real-time monitoring with 40+ health checks, performance optimization, security (firewall, WAF, malware scanning), daily off-site backups, spam filtering, and Cloudflare integration, from £218.90/month.
• Ecommerce Hosting Managed hosting optimized for ecommerce platforms including Magento, WooCommerce, and PrestaShop, with performance tuning, security hardening, and PCI-compliant configurations.
• Penetration Testing Security testing service to identify vulnerabilities in customer websites and applications before they can be exploited.
• Reseller Hosting Reseller hosting plans for agencies hosting multiple client sites, with tiers from Bronze (£15.27/month, 10GB storage, 25 sites) to Platinum (£63.68/month, 60GB storage, 150 sites).
• Windows Dedicated Servers Managed Windows Server hosting with Intel Xeon processors and Windows Server 2022 Standard Edition including RDP CALs, with tiers from Bronze (£241.34/month) to Platinum (£594.25/month).
• Cito MCP Server Standalone Model Context Protocol server product enabling AI assistants to deploy and manage Cito sites through structured tools with OAuth authentication, readOnlyHint/destructiveHint annotations, ephemeral SSH credentials, and filesystem scoping.

Quantifiable outcome

• 6-minute average ticket response time
• +8 more outcomes

Named customers10 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration13 records

AI capability5 records

Feature6 records

Partnerships

Seven partnerships are on record, tiered core and supporting.

• MonarxcoreTechnology or Integration · 16 July 2025Monarx provides proactive anti-malware protection integrated into ProStack's cPanel servers and Cito platform, offering real-time scanning, automatic malware cleanup, and manual website clean-up services for hacked sites.
• ResticcoreTechnology or Integration · 31 July 2024Restic is an open-source backup solution that ProStack adopted as their primary backup platform, offering faster backups, efficient resource usage, and quick restore capabilities compared to their previous R1Soft solution.
• cPanelcoreTechnology or IntegrationcPanel is the industry's leading web hosting control panel, integrated into ProStack's hosting services for customer account management, domain configuration, email setup, and server administration.
• CloudflarecoreTechnology or IntegrationCloudflare provides CDN, DDoS protection, and security services integrated into ProStack's platform. Customers can enable Cloudflare with one-click DNS configuration for improved performance and security.
• MicrosoftsupportingTechnology or IntegrationMicrosoft logo appears in partner section, indicating technology partnership or usage of Microsoft technologies within ProStack's infrastructure.
• NominetsupportingTechnology or IntegrationNominet appears as a technology partner, likely related to .uk domain registration and management services.
• RIPE NCCsupportingTechnology or IntegrationRIPE Atlas network monitoring used by ProStack to measure external network performance and connectivity from major UK ISPs, providing visibility into network latency and routing issues outside their own infrastructure.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Cloudways: Managed cloud hosting provider built on top of hyperscaler infrastructure (AWS, GCP, DigitalOcean) for SMBs, agencies, and e-commerce. Comparable in target customer (agencies and SMB online businesses) and managed-service positioning, though larger and globally distributed.
• 20i: UK-based managed hosting and reseller platform serving agencies and SMBs with proprietary stack, including managed WordPress and cloud hosting. Operates an agency/reseller programme structurally similar to ProStack's Cito Agency Partner Programme.
• Krystal Hosting: UK-based independent managed hosting provider focused on SMBs and developers with shared, VPS, cloud, and dedicated products. Closely comparable to ProStack in geography, customer base, and product portfolio, and a direct competitor for UK agency and e-commerce hosting deals.
• Heart Internet: UK-based hosting provider offering shared, VPS, dedicated, and reseller products aimed at SMBs and web professionals. Comparable geography, product mix, and reseller model, and a direct competitor for UK agency hosting spend.

Broad incumbents

• Rackspace Technology: Global managed cloud and hosting services provider serving enterprise and mid-market across multiple hyperscalers. Overlaps with ProStack on the 'managed hosting' value proposition and 24/7 human support model, but serves much larger customers.
• WP Engine: Large managed hosting provider specialising in WordPress and agency solutions with proprietary platform and StudioPress. Overlaps with ProStack on agency customers, managed hosting positioning, and proprietary technology, but at materially larger scale and venture-backed.
• UKFast: UK-based managed hosting, cloud, and colocation provider with strong enterprise and public-sector focus. Comparable UK geography and managed-service positioning, but at substantially larger scale and with colocation/data-center capabilities ProStack does not operate.
• Hostinger: Global low-cost hosting provider with shared, cloud, VPS, and managed WordPress products. Competes with ProStack on price in the SMB and entry-tier segments but does not match ProStack's agency-niche tooling or UK support positioning.
• SiteGround: Globally distributed managed hosting provider with shared, cloud, and dedicated products targeting SMBs and agencies. Comparable product breadth and customer profile, but at much larger scale with broader geographic footprint than ProStack.

Others

• cPanel (WebPros): Provider of the cPanel/WHM control panel that ProStack and most SMB hosts depend on. Not a direct competitor but a critical enabling platform whose licensing and roadmap decisions materially affect ProStack's unit economics and product roadmap.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/prostackhost
• Facebookfacebook.com/prostackhost
• LinkedInlinkedin.com/company/prostackhost

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Prostack