Send it. It's there.
Direct local sharing at wire speed.
Ultra-fast file, folder, and clipboard sharing between your Windows PC and Android devices over Wi-Fi. Mutual TLS 1.3 encryption, bounded memory, zero cloud servers, and zero accounts.
Why Beside is Built Different
Wire-Speed LAN Throughput
Transfers stream directly peer-to-peer across your local Wi-Fi network at wire speed in bounded memory chunks, without server throttling, storage quotas, or cloud roundtrips.
Mutual TLS 1.3 Only
Enforces TLS 1.3 exclusively via the memory-safe Rust library rustls with pinned X.509 SPKI certificate fingerprints. Unpaired peers are rejected during the TLS handshake before reading metadata.
8-Digit SAS Verification
Pairing derives an 8-digit verification code using the RFC 8446 / RFC 5705 Keying Material Exporter (EXPORTER-beside-pairing-v1), eliminating modulo bias and preventing Wi-Fi MITM attacks.
Flat 64 KB Memory Bounds
Streams in bounded 64 KB chunks directly to disk with live SHA-256 validation. Flat RAM consumption whether sharing a 2 KB code snippet or a 50 GB video batch.
Hardware Key Storage
Private identity keys are encrypted at rest using native operating system vaults: Windows Data Protection API (DPAPI) and Android Keystore AES-256-GCM.
Zero Cloud & Zero Tracking
No accounts to create, no tracking cookies, and zero telemetry SDKs. Beside never sends your file names or content to any server on the internet.
Feels Like a Native Part of Your System
Beside hooks directly into Windows and Android native system features so you can share files without interrupting your workflow.
Windows System Tray & Background Mode
Runs quietly in your system tray. Quick tray menu to pause receiving, toggle auto-accept, send files, or open settings. Optional first-run consent to start minimized with Windows.
Explorer Context Menu & SendTo
Right-click any file or folder directly in Windows Explorer to "Send with Beside", or dispatch via the Windows SendTo menu. If 1 paired peer is online, it sends immediately; if multiple are online, a compact picker appears.
Interactive WinRT Toast Notifications
Actionable desktop notifications with direct "Accept" and "Decline" buttons, "Copy" for text messages, and "Open folder" for completed files. Includes an optional "Hide message previews" privacy toggle.
Android System Share Sheet
Share directly from Google Photos, Android Files, browsers, or any app via standard Android ACTION_SEND and ACTION_SEND_MULTIPLE sheets. Streamed in safe 64 KB memory chunks with app-private data protection.
Android Gallery Auto-Scan
Incoming photos and videos are automatically registered via Android's MediaScannerConnection as soon as transfers finish, appearing instantly in your camera roll and Google Photos without a device reboot.
In-App Updates & Release Notes
Background update checker querying official GitHub Releases with SHA-256 verification and built-in Markdown release notes. Zero tracking beacons, completely opt-outable.
How Beside Works
Connect to Wi-Fi
Open Beside on your Windows PC and Android device on the same local Wi-Fi or mobile hotspot.
Drop or Paste
Drag and drop files, select entire directory trees, or paste terminal commands and text.
Confirm SAS Code
Verify the 8-digit visual SAS code on both screens to establish a pinned Mutual TLS session.
Wire-Speed Done
Files stream atomically to your Downloads folder with live SHA-256 verification and collision auto-rename.
See Beside in Action
Beside Free vs. Beside Pro
Beside Free is fully functional for daily transfers. Beside Pro unlocks unlimited transfers via a $14.99 lifetime license for up to 3 devices.
| Capability | Beside Free Edition | Beside Pro ($14.99 • 3 Devices) |
|---|---|---|
| Max Outgoing File Size | Up to 1 MB | ✓ Unlimited (Wire-Speed Direct LAN) |
| Files per Transfer Batch | 1 file per batch | ✓ Unlimited Multi-File Batches |
| Recursive Folder Transfer | Locked (single files only) | ✓ Full Directory Trees Preserved |
| Clipboard & Text Length | Up to 40 characters | ✓ Unlimited Text & Code Snippets |
| Trusted Paired Devices | 1 paired device | ✓ Unlimited Paired Devices |
| Zero-Click Auto-Accept | Manual approval required | ✓ Automatic Transfer from Paired |
| Custom Save Directory | Downloads/Beside | ✓ Any Local Folder or Drive |
| Windows Explorer & SendTo Menu | ✓ Included (1 file ≤ 1 MB) | ✓ Full Unrestricted Integration |
| Android System Share Sheet | ✓ Included (1 file ≤ 1 MB) | ✓ Full Unrestricted Integration |
| Windows Tray & WinRT Toasts | ✓ Included | ✓ Included |
| In-App Updates & SHA-256 Check | ✓ Included (GitHub Releases) | ✓ Included (GitHub Releases) |
| Receiving from Pro Senders | ✓ Free forever (unlimited size) | ✓ Free forever (unlimited size) |
Get Beside v0.1.1
Official binaries compiled directly from source and verified with SHA-256 digests.
Official Inno Setup installer. Clean install with desktop icon, Start menu shortcut, and uninstaller.
Signed release APK for direct installation on phones and tablets.
When installing an APK directly outside the Play Store, Android shows a standard security notice: "File might be harmful" or requests "Install unknown apps" permission. This is standard Android security for all sideloaded applications.
You can verify file integrity in your terminal before installing:
sha256sum Beside-v0.1.1-Android-arm64.apk
Buy & Download on Official Channels
Gumroad
Instant License Key DeliveryGumroad is where we sell Beside Pro lifetime licenses ($14.99) with automatic key generation, email receipt backups, and secure payment processing.
itch.io
Indie Publishing & Buildsitch.io is our indie publishing hub where you can download Beside community releases free of charge ($0 or optional donation). Pro upgrades are available exclusively on Gumroad.
SourceForge
Open Source Mirror & FRSBeside is mirrored on SourceForge with verified release checksums, changelogs, and fast global CDN downloads for Windows installers, portable ZIPs, and Android APKs.
Trust, Privacy & Support
Real architectural guarantees, zero marketing fluff, and open GitHub issue tracking.
Privacy First
Zero tracking, zero analytics beacons, zero third-party ads. Beside runs entirely on your local network.
Secure Transactions
We never touch your credit card numbers. Gumroad handles all commercial licensing with buyer protection.
Open Support
Report bugs, ask network troubleshooting questions, and read release notes directly on our public GitHub repository.
Made by Thisma Labs
Beside is an independent software release engineered for wire speed, minimal memory footprints, and strict local-first privacy with zero cloud telemetry. Connect with our official development channels and verified storefronts: