Comet Backup vs Resilio Sync 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

Resilio Sync

0.0 (0 reviews)

Resilio Sync is a fast and reliable file synchronization software that uses peer-to-peer technology to transfer data directly between your devices without storing files in the cloud.

Starting at Free
Free Trial 14 days

Quick Comparison

Feature Comet Backup Resilio Sync
Website cometbackup.com resilio.com
Pricing Model Subscription One_time
Starting Price $2/month Free
FREE Trial ✓ 30 days free trial ✓ 14 days free trial
Free Plan ✘ No free plan ✓ Has free plan
Product Demo ✓ Request demo here ✘ No product demo
Deployment saas on-premise desktop desktop mobile on-premise
Integrations Amazon S3 Google Cloud Storage Microsoft Azure Wasabi Backblaze B2 ConnectWise Manage Syncro Gradwell IBM Cloud DigitalOcean Windows macOS Linux FreeBSD Android iOS Synology QNAP Western Digital FreeNAS
Target Users small-business mid-market enterprise freelancer solopreneur small-business
Target Industries
Customer Count 0 0
Founded Year 2017 2016
Headquarters Christchurch, New Zealand Pleasanton, USA

Overview

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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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Resilio Sync

Resilio Sync provides you with a private and secure way to sync files across all your devices using BitTorrent technology. Unlike traditional cloud storage, your data never sits on a third-party server. Instead, files move directly between your phone, computer, and NAS at the maximum speed your network allows. This peer-to-peer approach means you aren't limited by cloud storage quotas or throttled upload speeds.

You can manage massive folders containing thousands of photos or large video files without any lag. It works across Windows, macOS, Linux, and mobile platforms, making it ideal for creative professionals and tech-savvy families who want to maintain total control over their data. Whether you are backing up your phone's camera roll or sharing a project folder with a colleague, you get a decentralized solution that stays fast even when your internet connection is spotty.

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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Resilio Sync Features

  • Peer-to-Peer Transfer. Skip the cloud and send files directly between your devices for the fastest possible transfer speeds on your local network.
  • Selective Sync. Download only the specific files you need from a large folder to save space on your local hard drive.
  • One-Time Sending. Share large files quickly with a secure link that expires automatically, perfect for sending assets to clients or friends.
  • Cross-Platform Support. Keep your data in sync across Windows, macOS, Linux, Android, iOS, and even your home NAS device effortlessly.
  • Encrypted Folders. Protect your sensitive data with end-to-end encryption so only the people you authorize can view or edit your files.
  • Automatic Camera Backup. Back up your photos and videos from your phone to your home computer automatically as soon as you take them.

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
R

Resilio Sync Pricing

Sync Free
$0
  • Unlimited data syncing
  • Sync across all your devices
  • Fast peer-to-peer transfers
  • Standard folder sharing
  • Available for all platforms

Pros & Cons

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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

Resilio Sync

Pros

  • Extremely fast transfer speeds on local networks
  • No monthly subscription fees for personal use
  • Total privacy since data stays on your hardware
  • Handles very large files and folders with ease

Cons

  • Both devices must be online to sync
  • Initial setup can be technical for beginners
  • Mobile app can impact battery during large transfers
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