Comet Backup vs TerraMaster TOS Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated Apr 2026 8 min read

Comet Backup

0.0 (0 reviews)

Comet Backup is a flexible backup software solution providing service providers and IT teams with fast, encrypted, and deduplicated data protection across diverse storage environments and platforms.

Starting at $2/mo
Free Trial 30 days
VS

TerraMaster TOS

0.0 (0 reviews)

TerraMaster TOS is a specialized operating system designed for network-attached storage devices that provides intuitive data management, robust backup solutions, and secure private cloud storage for your digital assets.

Starting at Free
Free Trial NO FREE TRIAL

Quick Comparison

Feature Comet Backup TerraMaster TOS
Website cometbackup.com terra-master.com
Pricing Model Subscription One_time
Starting Price $2/month Free
FREE Trial ✓ 30 days free trial ✘ No free trial
Free Plan ✘ No free plan ✓ Has free plan
Product Demo ✓ Request demo here ✓ Request demo here
Deployment saas on-premise desktop on-premise mobile desktop
Integrations Amazon S3 Google Cloud Storage Microsoft Azure Wasabi Backblaze B2 ConnectWise Manage Syncro Gradwell IBM Cloud DigitalOcean Google Drive Dropbox OneDrive Amazon S3 Box Plex Docker Apple Time Machine Rsync Nextcloud
Target Users small-business mid-market enterprise solopreneur small-business mid-market
Target Industries creative-services it-services education
Customer Count 0 0
Founded Year 2017 2010
Headquarters Christchurch, New Zealand Shenzhen, China

Overview

C

Comet Backup

Comet Backup gives you total control over your data protection strategy with a fast, secure, and highly customizable backup solution. You can protect everything from individual files and folders to entire disk images, Microsoft 365 environments, and databases like SQL or MongoDB. The software uses client-side deduplication, meaning your data is compressed and encrypted before it even leaves your device, saving you significant bandwidth and storage costs.

Designed specifically for IT professionals and service providers, the platform allows you to choose your own storage destination, whether it's local hardware or cloud providers like AWS, Azure, or Wasabi. You can manage all your backup jobs through a centralized web interface, white-label the software with your own branding, and scale your operations without worrying about per-device licensing fees.

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TerraMaster TOS

TerraMaster TOS is the dedicated operating system that powers your TerraMaster NAS, turning raw hardware into a sophisticated data management hub. You can manage your files through a web-based interface that feels just like a desktop computer, making it easy to organize photos, videos, and business documents. It simplifies complex networking tasks so you can set up a private cloud, share files securely with teammates, and access your data from any device worldwide.

The platform focuses heavily on data safety and multimedia enjoyment. You can automate your backups across multiple platforms, protect your system against ransomware with snapshot technology, and even stream high-definition media to your home theater. Whether you are a creative professional handling large 4K video files or a small business owner needing a reliable file server, TOS provides the tools to keep your digital life organized and protected.

Overview

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Comet Backup Features

  • Chunk-Based Deduplication Upload data once and only back up changed blocks to save massive amounts of storage space and bandwidth.
  • Client-Side Encryption Secure your data with AES-256 bit encryption before it leaves your network so only you hold the keys.
  • White-Label Branding Replace all logos and names with your own brand to provide a professional, cohesive experience for your clients.
  • Live File Backups Back up files while they are still in use by applications without interrupting your team's daily productivity.
  • Centralized Management Monitor all backup health, status, and history across your entire fleet from a single, intuitive web dashboard.
  • Flexible Storage Options Choose where your data lives by connecting to any S3-compatible cloud storage or your own local servers.
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TerraMaster TOS Features

  • TRAID Management. Optimize your disk space automatically by combining different drive capacities into a single, flexible storage pool with redundancy.
  • Snapshot Protection. Create point-in-time copies of your data so you can instantly recover files if they are accidentally deleted or hit by ransomware.
  • Terra Photos. Organize your entire photo library using AI-powered facial and object recognition to find specific memories in seconds.
  • Multi-Version Backup. Sync your data across PCs, Macs, and other NAS units to ensure you always have a recovery path during hardware failures.
  • Docker Manager. Deploy thousands of containerized applications easily to extend your server's functionality with media players, databases, or web servers.
  • CloudSync Integration. Connect your private NAS to public services like Google Drive and Dropbox for a seamless hybrid cloud experience.

Pricing Comparison

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Comet Backup Pricing

Self-Hosted
$2
  • $2 per device monthly base
  • Unlimited backup jobs
  • Client-side deduplication
  • Full white-labeling
  • API and CLI access
  • Free support and updates
T

TerraMaster TOS Pricing

TOS Standard
$0
  • Included with hardware purchase
  • Unlimited user accounts
  • Full application center access
  • Regular security updates
  • Mobile app connectivity
  • Multi-channel technical support

Pros & Cons

M

Comet Backup

Pros

  • Extremely fast backup speeds due to efficient deduplication
  • Highly flexible storage destination options for total control
  • Affordable pay-per-device pricing with no hidden fees
  • Excellent white-labeling capabilities for service providers

Cons

  • Initial server setup requires some technical knowledge
  • Web interface can feel complex for novice users
  • Documentation is technical and geared toward IT pros
A

TerraMaster TOS

Pros

  • No recurring subscription fees for core features
  • Intuitive desktop-like interface is easy to navigate
  • Fast setup process for new storage volumes
  • Strong support for Docker and third-party apps

Cons

  • App ecosystem is smaller than some competitors
  • Mobile app interface can feel slightly dated
  • Occasional translation errors in system menus
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