Put your files into your Dropbox on one computer, and they&#39;ll be instantly available on any of your other computers that also have Dropbox installed. Because copies of your files are stored on Dropbox&#39;s secure servers, you can also access them from any computer or mobile device using the Dropbox website. 

You receive 2 GB of storage space for free, upon registration. You may earn up to 16GB of free storage space by referring new users to Dropbox, at 500 MB per referral.

Dropbox

Windows

Linux

Online

Android

iPhone

Blackberry

Chrome OS

Windows S

Windows Phone

iPad

Kindle Fire

Worlds leading online storage and file sync service. You get 2GB free. Apps for all major platforms.

Google Photos is a photograph and video sharing and storage service by Google. It includes unlimited photo and video storage, and apps for Android, iOS, and the browser. The unlimited storage supports images up to 16 megapixels and videos up to 1080p in resolution.

Google Photos

Android Tablet

Google Photos is the home for all of your photos and videos, searchable and organised by the people, places and things that matter.

Resilio Sync allows you to automatically sync files between computers via secure, distributed technology (P2P bittorrent protocol).

Fast, intelligent file transfers.
Sync skips the cloud and finds the shortest path between devices when transferring data. No Cloud. No uploading to third party servers. Just fast, simple file syncing.

Use your local network
You don&#39;t need the Internet to use Sync. Sync can utilize local networks even if the Internet is down or unavailable. You can even set up a router in a place with zero internet access to share data over a private network.

Intelligent synchronization.
Incremental updates
After you edit an existing file, Sync knows how to update only the parts that have changed rather than the entire file. This makes updates much faster, especially for large files.

Continuous synchronization and updating
Keep all of your shared folders up to date all the time across all devices. Updates and changes are synchronized immediately and automatically.

Pause specific folders
You can pause syncing for specific folders, or for everything at once. If you&#39;re in a situation with extremely limited connectivity you can turn off everything but the most important folders to ensure that information is synchronized as efficiently as possible.

On-demand access to files.

Save space with placeholder files
When &#39;Selective Sync&#39; is on, Sync will create placeholder files in your filesystem that can be searched locally. Download only the files you need, when you need them, without having to replicate entire folders on every device. Placeholder files are representations of your files that can be double-clicked and downloaded locally.

Access massive files when you need them
Don&#39;t want to sync the entire contents of a folder to your device? Turn on &#39;Selective Sync&#39; to save space. You can choose to only sync files on-demand, when you need them.

Resilio Sync 

Resilient, fast and scalable file synchronization for enterprises and individuals.

SyncTrayzor is a wrapper for Syncthing which allows Syncthing&#39;s window to be hidden in the tray area. SyncTrayzor has a built-in web browser to manage Syncthing without opening your browser. SyncTrayzor can be configured to automatically start at PC startup. A portable version is also available.

SyncTrayzor

Syncthing

SyncTrayzor is a wrapper for Syncthing which allows Syncthing's window to be hidden in the tray area.

Securely share anything within the company, or with clients and contractors.

Keep track of changes and stay safe and productive. Users can roll back to any previous version of a document.

Replace attachments with encrypted links. Send files even directly from Outlook with download limit, expiry data and password protection.

Set up security policies to avoid accidental breaches caused by employee errors.

Enable Detailed Access Logs to see the open date, email, IP address, and platform used to open the links you shared.

You can share a tresor with others and set their rights.

Access encrypted documents from any device and stay in sync with your team.

Recents lists all user activity in tresors shared with you. Here you can overview your and other collaborators' actions such as editing, creating, deleting and more. Subscription Owners can see activities for the whole account.

Tresorit is the end-to-end encrypted file sync and sharing solution which safeguards confidential information by design. Unlike other public cloud vendors, Tresorit has no access to users’ files, which ensures maximum confidentiality.
- Uncompromised security: Your files are protected from the moment you upload them to the cloud, until they reach the intended recipient. It is technically impossible for anyone else to gain unauthorized access to your files.
- Seamless and secure teamwork: Whether it’s personal data for HR documents, legal contracts, financial plans, or top-secret R&amp;D prototypes – Tresorit provides a digital workspace where your highly sensitive documents remain safe.
- Powerful control and monitoring options: Manage and oversee all users and their information – we offer powerful control features so you can be sure that the right employees access the right files.

Tresorit

Tresorit is the end-to-end encrypted file sync and sharing solution which safeguards confidential information by design.

Finder folder icons showing sync state on Mac (Lion)

Insync is a https://alternativeto.net/software/google-drive/ sync and backup client with multiple account support.

* Advanced sharing without browser
* Multiple Google Drive Account support.
* Bidirectional sync of your Google Docs to one or more Mac, Windows or Linux desktops.
* View and edit Google Drive documents offline in Office format. Changes get synced back too.
* Sync any files outside your Insync directory (via symlink)

Insync

Insync is a <a href='//alternativeto.net/software/google-drive/'><img alt='Small Google Drive icon' class='mini-app-icon' src='//d2.alternativeto.net/dist/icons/google-drive_94983.png?width=36&height=36&mode=crop&upscale=false' />Google Drive</a> sync and backup client with multiple account support.* Advanced sharing without browser

Pomodone is the easiest way to track your workflow using Pomodoro technique, on top of your current task management service.

Don&#39;t create any tasks! Just connect your favorite task management service and start using Pomodone just in 3 minutes.

Pomodone

Mac OS X

Pomodone is the easiest way to track your workflow using Pomodoro technique, on top of your current task management service.

Pvtbox Sync allows direct, fast, and secure peer-2-peer data transfer between all of your devices including PC, Mac, Servers, NAS, and Mobile (Android &amp; iOS). Sync/Share/Collaborate all your files with ease. Strongly confidential, with top-notch security and speed Pvtbox Sync gives full control in your hands. 

Why Pvtbox Sync is so special?

When you transfer your files using Pvtbox Sync, remember that they are stored only on your added devices and nowhere else — you may feel most secure.

With file transfer the service also allows you to carry out collaborated work with your friends and colleagues, wipe data on any device if you lose access to it, create your own private cloud and share files in the easiest ways.

Pvtbox Sync

Pvtbox Sync allows direct, fast, and secure peer-2-peer data transfer between all of your devices including PC, Mac, Servers, NAS, and Mobile (Android &amp; iOS).

TravelerBuddy is an intuitive Travel Planning App that understands what you need before, during and after travel. No more inadequate flight notification alerts, invalid passports, and lack of offline access to travel-related information. 
Simply forward your booking confirmation and your App will auto-generate your trip itinerary. Breeze through immigration and post-travel expense reimbursement with this intuitive and innovative one-App travel solutions that simplifies travel planning.

Traveler Buddy

Travel Itinerary Management. Created by business and frequent leisure travelers to enjoy hassle-free travels. Made for travelers like them. Get real time flight alerts and more.

Apps with 'Selective synchronization' feature