The future is coming in the form of web 3.0, a decentralised and trusted future.Some of the great alternatives to centralised version of some applications are given below :

Google Docs

Alternative

GraphiteDocs

Encrypted sharing and collaboration to a user or your entire team. G-Suite except you own your data. Built with @blockstack.

Medium

Alternative

Kauri.io

Learn about Ethereum development and contribute tutorials or technical articles. @ConsenSys project built on Ethereum + IPFS

Youtube

Alternative

View.ly

A social video platform :

1. Without pesky ads, and with respect for users privacy.
2. Where communities thrive and engagement between fans and creators is highly encouraged.
3. Where creators with small, medium or large‐sized audiences have equal access to new monetization tools.

Twitch

Alternative

LivepeerOrg

For video engineers who need affordable, reliable video encoding, Livepeer leverages decentralization to enable use cases and business models that were never possible via proprietary, centralized cost structures.

Twitter

Alternative

Peepeth

The values platform. A blockchain-powered social network for our best selves.

Quora

Alternative

Cent

Cent is a hybrid centralized / decentralized content network built on Ethereum. It’s a constellation of contracts that allows you to make money by sharing your wisdom and creativity.

Upwork

Alternative

Gitcoin

A Mission to Grow Open Source. A community for developers to collaborate and monetize their skills while working on Open Source projects through bounties.

LinkedIn

Alternative

SpringRoleInc.

Using the blockchain for building a trusted verification and attestation platform. We have a real reason to be on the blockchain. We are confident that we are solving real problems that exist in today’s profile verification methodologies. And the power of the blockchain has given us complete control and provides us with the flexibility to develop a trustworthy verification and attestation process from ground up.

Facebook

Alternative

AKASHA

Decentralized Social Media Network.Powered by the Ethereum world computer .Embedded into the Inter-Planetary File System.

GoFundMe

Alternative

Give Hong Bao

Crowdfunded Campaigns Powered by the Ethereum Network. Hong Bao lets you raise money for any cause, anywhere in the world

Telegram

Alternative

Status

Chat, browse and transact securely in an open source community committed to bringing the power of Ethereum and a more distributed internet to your pocket.

Ebay/Amazon

Alternative

spl.yt

A global inventory and affiliate sales platform. Increase sales as a seller and get paid as an affiliate with no intermediary fees

Slack

Alternative

Timski

Timski in action! ✔ Multi-participant group chat ✔ Create multiple channels for multiple teams ✔ Decentralized storage & auth ✔ Complete data ownership, no lock-ins ✔ No gas fee

CNN

Alternative

DNN

DNN uses the blockchain to distribute censorship- resistant and verifiable news, while ensuring accuracy and transparency through incentivization.