When comparing Dropbox vs Porkbun, the Slant community recommends Dropbox for most people. In the question“What are the best website hosting providers?” Dropbox is ranked 16th while Porkbun is ranked 17th. The most important reason people chose Dropbox is:
You can use Dropbox via website, by installing a desktop client that creates a folder that you simply drag and drop files into, or with their mobile app. Everything synchronizes across all devices used and cloud storage. And Dropbox offers easy methods of sharing whatever is within it.
Specs
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Pros
Pro Easy to use
You can use Dropbox via website, by installing a desktop client that creates a folder that you simply drag and drop files into, or with their mobile app. Everything synchronizes across all devices used and cloud storage. And Dropbox offers easy methods of sharing whatever is within it.
Pro Cross-platform desktop and mobile
Dropbox is available on iOS, Android, BlackBerry, Windows, OS X and Linux. By having a client for so many OS's pretty much anyone is covered no matter what kind of device or OS they are using.
Pro Allows sharing a folder
Using a desktop client: right click on the folder you want to share and select Dropbox > Share This Folder, then enter the e-mail addressees of people you want to share the folder with.
Pro Smart updates to big files
If a small portion of the file is changed it sends/receives only the differences (not the whole file), which is fast and bandwidth-efficient.
Pro Allows sharing a single file via link
Whether using desktop client or web interface, simply right click on the file you want to share and select Dropbox > Share link, then send the link to the people you want to share the file with. The recipient does not require a Dropbox account.
Pro Up to 18GB of free storage space
Dropbox personal accounts start out free, with 2GB of space, but users can get extra space by recommending the site to friends, or taking part in events like "Dropquest", where users can win extra space by solving puzzles.

Pro Linux support
Dropbox offers native Linux support, integrates with Nautilus file manager.
Pro Reliable
Pro Desktop client has no file size limit
As long as you have enough storage available, you can upload files of any size using Dropbox desktop client.
Pro Folders can be downloaded compressed to save bandwidth
To save bandwidth and download speed you can choose to compress a folder into a zip archive for download.
Pro Adjustable bandwidth use
To not slow down the network or save traffic you can limit the upload and download speeds of Dropbox.
Pro Lots of addons and integrations
There are official and third-party Dropbox add-ons that extend the functionality of the service and add ease of use of existing features.
Additionally, Dropbox can be integrated with existing applications to bring its functionality to other apps.
Pro 30-day version control
Dropbox keeps deleted and earlier versions of files for a month.
Pro Instant disaster recovery
Your files always synced online means instant disaster recovery. When your hard drive becomes unbootable, pick up another laptop and just carry on with your life from where you last saved.
Pro Available free storage can be increased with referrals
You get extra free space for you and your friend if they sign up.
Pro Fast sync speed
Pro Transparent, everyday pricing for all domains and services
All the top-level domains available at Porkbun (319 of the 1,562 currently in existence) are offered for $1 above the wholesale price, plus the processing fee for your credit card. No gimmicks or bait-and-switch pricing, no surprises. That's the price for renewal and inbound transfers too, so you know exactly how much you'll be spending every year you own the domain.
Pro Free WHOIS Privacy (for top-level domains that allow it)
All domains receive free WHOIS privacy, which masks your personal information from the public registry and saves you from the deluge of e-mail spam and telemarketers which typically accompanies purchasing a domain name today. Some top-level domains, like .us, require that you publish your contact info publicly, and they'll tell you that before you place the order.
Pro FAST Payments - honest pricing - integrity
No more topping up a reseller account with credits that cost a commission to buy or getting caught at renewal with a higher price unless you find a coupon somewhere... It's integrity all the way and a VERY fast payment portal!
Pro Porkbun accounts can be secured with two-factor authentication
Don't let the next big hack allow some internet pirate to steal your domain, just turn on 2FA in the control panel and all logins will require a TOTP code in addition to your e-mail address and password.
Pro Best Service
No hidden renewal charges and free privacy on all domains.
Pro Live support during support hours
During support hours a real human can be reached via phone or email. Emails are generally responded quickly and always within 24 hours.
Pro Not spamming you with useless offers
They are sincere, they do not spam your inbox with "offers" and services you are never going to use and then, if you make the mistake to accept, pay inflated prices when you renew. They communicate with you only for serious and legitimate reasons. Excellent services!
Pro Just the best
Nothing wrong to say about them, this company should stay as they are.
Pro Free SSL Certificates
Every domain is issued SSL certificates for the root domain and any ten subdomains of your choice via the Let's Encrypt service. The certificates expire every 90 days but Porkbun automatically renews them for you prior to each expiration, for as long as you own the domain. These certificates don't offer any identity verification, but they do allow all the traffic to and from your domain to be encrypted at industry-standard levels at no cost. They can be acquired at will through the interface without any contact with support staff and the certificates are available for download as soon as they are created.
Pro Free DNS hosting
Registering the domain is only half the battle, the other half is announcing to the world the IP address of the server hosting your site. Porkbun includes this service with all domain registrations and makes it easy to manage by using the GoDaddy DomainConnect standard for service auto-discovery. This means you don't need to get your hands dirty, just pick the web host you want to connect the domain to from the drop-down menu and click OK. Or you can manage all the settings yourself from the control panel without restriction or interference. You can have as many A, AAAA, CNAME, MX, NS and TXT resource records as your heart desires (or ARIN allows).
Pro Free e-mail forwarding and reasonable e-mail hosting
All domains come with 10 free e-mail forwards which allow you to use your new domain to create aliases for existing e-mail accounts elsewhere. If you need hosted e-mail instead, that's only $24/year per mailbox, and it includes 10GB of storage, external POP3 and IMAP gateways and a modern webmail portal from which you can send and receive e-mails.
Pro DNSSEC support for all top-level domains
Worried about falling victim to one of the many security risks on the internet? Then take a moment to generate DS records for your domain and Porkbun will propagate them to the root zone for free. Doing this ensures that even if the nameserver for your site goes down, no hackers can impersonate it and steal your visitors' personal or financial information.
Pro Sincere, personal touch to all interactions
The support team is very pleasant to deal with and small enough that personal relationships can easily be formed. The promise of responses to support requests in under an hour is almost universally observed and even their site has some fun (who doesn't like pictures of playful piglets while their SSL certificates are generated?) instilled in it.
Pro Accepts Bitcoin
They accept Bitcoin as a form of payment for all services.
Pro Free website builder and hosting at Weebly
All domains at Porkbun can take advantage of Weebly's very popular website builder, complete with hosting for unlimited content pages and an e-commerce shop for five items. Of course many features are locked out until you pay for a hosting package, but you can very easily host a simple but professional looking portfolio or blog with minimal effort and greater than 99% uptime.
Cons
Con Too little free space
There is just too little of free space available comparing to the competition.

Con Not secure
They don't apply end-to-end encryption, files are visible to admins, governments, etc..
Con No privacy
Extensive collecting and distribution of user data to commercial third parties.
Con Consumes a lot of CPU resources when syncing many files
Con All-or-nothing (non-selective) upload
Uploading generated contents (cache, compiled code, etc.) is prone to conflicts, wastes bandwidth and free space.
Con Low bandwidth
Con Dropbox keeps deleting features, chasing customers away
For instance, all photo albums got deleted. It used to be very easy to share a couple og photos, now it's PAINFUL and must be done file by file.
Con Nocive development model
Takes a lot of decisions that usually damage community, from deleting features to making impossible to use with other filesystems than ext4 because they decided without a plausible reason (they said it was about xattrs, but all modern linux filesystems supports xattrs, so it's bs.)(they remove this later, but it's too late).
Con Problems when synching between Linux and Windows devices (unconfirmed)
This summer I lost thousands of files due to this problem on older projects which subsequently needed revising and had to be rebuilt as tons of the source was gone.
Con Restricted only to 3 devices for FREE accounts
Recently dropbox decreased the number of linked devices to 3, so you can't have more than 3 linked devices. This is problematic if you use Dropbox to sync between your computers.
Con Can unintentionally delete your files if you reinstall your OS without closing Dropbox
If you reinstall the operation system for your PC and you do not close Dropbox, it will delete all files.
Con No wildcard/catch all email forwarding
