diff --git a/src/components/NoteInteractions/ReplySort.tsx b/src/components/NoteInteractions/ReplySort.tsx
new file mode 100644
index 0000000..b7cee74
--- /dev/null
+++ b/src/components/NoteInteractions/ReplySort.tsx
@@ -0,0 +1,47 @@
+import { Button } from '@/components/ui/button'
+import { DropdownMenu, DropdownMenuContent, DropdownMenuItem, DropdownMenuTrigger } from '@/components/ui/dropdown-menu'
+import { ChevronDown, Clock, TrendingUp, ArrowUpDown, Zap } from 'lucide-react'
+import { useTranslation } from 'react-i18next'
+
+export type ReplySortOption = 'newest' | 'oldest' | 'top' | 'controversial' | 'most-zapped'
+
+export default function ReplySort({ selectedSort, onSortChange }: { selectedSort: ReplySortOption; onSortChange: (sort: ReplySortOption) => void }) {
+  const { t } = useTranslation()
+
+  const sortOptions = [
+    { id: 'newest' as ReplySortOption, label: t('Newest'), icon: Clock },
+    { id: 'oldest' as ReplySortOption, label: t('Oldest'), icon: Clock },
+    { id: 'top' as ReplySortOption, label: t('Top'), icon: TrendingUp },
+    { id: 'controversial' as ReplySortOption, label: t('Controversial'), icon: ArrowUpDown },
+    { id: 'most-zapped' as ReplySortOption, label: t('Most Zapped'), icon: Zap },
+  ]
+
+  const selectedOption = sortOptions.find(option => option.id === selectedSort) || sortOptions[0]
+
+  return (
+    <DropdownMenu>
+      <DropdownMenuTrigger asChild>
+        <Button variant="outline" className="flex items-center gap-2 h-8">
+          <selectedOption.icon className="w-4 h-4" />
+          <span className="text-sm">{selectedOption.label}</span>
+          <ChevronDown className="w-4 h-4" />
+        </Button>
+      </DropdownMenuTrigger>
+      <DropdownMenuContent align="start">
+        {sortOptions.map(option => (
+          <DropdownMenuItem
+            key={option.id}
+            onClick={() => onSortChange(option.id)}
+            className="flex items-center gap-2"
+          >
+            <option.icon className="w-4 h-4" />
+            <span>{option.label}</span>
+            {option.id === selectedSort && (
+              <span className="ml-auto text-primary">✓</span>
+            )}
+          </DropdownMenuItem>
+        ))}
+      </DropdownMenuContent>
+    </DropdownMenu>
+  )
+}
diff --git a/src/components/NoteInteractions/index.tsx b/src/components/NoteInteractions/index.tsx
index cfe30d6..c878c07 100644
--- a/src/components/NoteInteractions/index.tsx
+++ b/src/components/NoteInteractions/index.tsx
@@ -10,6 +10,7 @@ import ReplyNoteList from '../ReplyNoteList'
 import RepostList from '../RepostList'
 import ZapList from '../ZapList'
 import { Tabs, TTabValue } from './Tabs'
+import ReplySort, { ReplySortOption } from './ReplySort'
 
 export default function NoteInteractions({
   pageIndex,
@@ -19,12 +20,13 @@ export default function NoteInteractions({
   event: Event
 }) {
   const [type, setType] = useState<TTabValue>('replies')
+  const [replySort, setReplySort] = useState<ReplySortOption>('newest')
   const isDiscussion = event.kind === ExtendedKind.DISCUSSION
   
   let list
   switch (type) {
     case 'replies':
-      list = <ReplyNoteList index={pageIndex} event={event} />
+      list = <ReplyNoteList index={pageIndex} event={event} sort={replySort} />
       break
     case 'quotes':
       if (isDiscussion) return null // Hide quotes for discussions
@@ -52,6 +54,12 @@ export default function NoteInteractions({
           <ScrollBar orientation="horizontal" className="opacity-0 pointer-events-none" />
         </ScrollArea>
         <Separator orientation="vertical" className="h-6" />
+        {type === 'replies' && isDiscussion && (
+          <>
+            <ReplySort selectedSort={replySort} onSortChange={setReplySort} />
+            <Separator orientation="vertical" className="h-6" />
+          </>
+        )}
         <div className="size-10 flex items-center justify-center">
           <HideUntrustedContentButton type="interactions" />
         </div>
diff --git a/src/components/ReplyNoteList/index.tsx b/src/components/ReplyNoteList/index.tsx
index 04c4b21..2e4ac8d 100644
--- a/src/components/ReplyNoteList/index.tsx
+++ b/src/components/ReplyNoteList/index.tsx
@@ -18,6 +18,7 @@ import { useNostr } from '@/providers/NostrProvider'
 import { useReply } from '@/providers/ReplyProvider'
 import { useUserTrust } from '@/providers/UserTrustProvider'
 import client from '@/services/client.service'
+import noteStatsService from '@/services/note-stats.service'
 import { Filter, Event as NEvent, kinds } from 'nostr-tools'
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
 import { useTranslation } from 'react-i18next'
@@ -32,7 +33,7 @@ type TRootInfo =
 const LIMIT = 100
 const SHOW_COUNT = 10
 
-export default function ReplyNoteList({ index, event }: { index?: number; event: NEvent }) {
+export default function ReplyNoteList({ index, event, sort = 'newest' }: { index?: number; event: NEvent; sort?: 'newest' | 'oldest' | 'top' | 'controversial' | 'most-zapped' }) {
   const { t } = useTranslation()
   const { push, currentIndex } = useSecondaryPage()
   const { hideUntrustedInteractions, isUserTrusted } = useUserTrust()
@@ -41,6 +42,46 @@ export default function ReplyNoteList({ index, event }: { index?: number; event:
   const { relayList: userRelayList } = useNostr()
   const [rootInfo, setRootInfo] = useState<TRootInfo | undefined>(undefined)
   const { repliesMap, addReplies } = useReply()
+
+  // Helper function to get vote score for a reply
+  const getReplyVoteScore = (reply: NEvent) => {
+    const stats = noteStatsService.getNoteStats(reply.id)
+    if (!stats?.likes) {
+      return 0
+    }
+    
+    const upvoteReactions = stats.likes.filter(r => r.emoji === '⬆️')
+    const downvoteReactions = stats.likes.filter(r => r.emoji === '⬇️')
+    const score = upvoteReactions.length - downvoteReactions.length
+    
+    return score
+  }
+
+  // Helper function to get controversy score for a reply
+  const getReplyControversyScore = (reply: NEvent) => {
+    const stats = noteStatsService.getNoteStats(reply.id)
+    if (!stats?.likes) {
+      return 0
+    }
+    
+    const upvoteReactions = stats.likes.filter(r => r.emoji === '⬆️')
+    const downvoteReactions = stats.likes.filter(r => r.emoji === '⬇️')
+    
+    // Controversy = minimum of upvotes and downvotes (both need to be high)
+    const controversy = Math.min(upvoteReactions.length, downvoteReactions.length)
+    return controversy
+  }
+
+  // Helper function to get total zap amount for a reply
+  const getReplyZapAmount = (reply: NEvent) => {
+    const stats = noteStatsService.getNoteStats(reply.id)
+    if (!stats?.zaps) {
+      return 0
+    }
+    
+    const totalAmount = stats.zaps.reduce((sum, zap) => sum + zap.amount, 0)
+    return totalAmount
+  }
   const replies = useMemo(() => {
     const replyIdSet = new Set<string>()
     const replyEvents: NEvent[] = []
@@ -60,8 +101,46 @@ export default function ReplyNoteList({ index, event }: { index?: number; event:
       })
       parentEventKeys = events.map((evt) => evt.id)
     }
-    return replyEvents.sort((a, b) => a.created_at - b.created_at)
-  }, [event.id, repliesMap])
+    // Apply sorting based on the sort parameter
+    switch (sort) {
+      case 'oldest':
+        return replyEvents.sort((a, b) => a.created_at - b.created_at)
+      case 'newest':
+        return replyEvents.sort((a, b) => b.created_at - a.created_at)
+      case 'top':
+        // Sort by vote score (upvotes - downvotes), then by newest if tied
+        return replyEvents.sort((a, b) => {
+          const scoreA = getReplyVoteScore(a)
+          const scoreB = getReplyVoteScore(b)
+          if (scoreA !== scoreB) {
+            return scoreB - scoreA // Higher scores first
+          }
+          return b.created_at - a.created_at // Newest first if tied
+        })
+      case 'controversial':
+        // Sort by controversy score (min of upvotes and downvotes), then by newest if tied
+        return replyEvents.sort((a, b) => {
+          const controversyA = getReplyControversyScore(a)
+          const controversyB = getReplyControversyScore(b)
+          if (controversyA !== controversyB) {
+            return controversyB - controversyA // Higher controversy first
+          }
+          return b.created_at - a.created_at // Newest first if tied
+        })
+      case 'most-zapped':
+        // Sort by total zap amount, then by newest if tied
+        return replyEvents.sort((a, b) => {
+          const zapAmountA = getReplyZapAmount(a)
+          const zapAmountB = getReplyZapAmount(b)
+          if (zapAmountA !== zapAmountB) {
+            return zapAmountB - zapAmountA // Higher zap amounts first
+          }
+          return b.created_at - a.created_at // Newest first if tied
+        })
+      default:
+        return replyEvents.sort((a, b) => b.created_at - a.created_at)
+    }
+  }, [event.id, repliesMap, sort])
   const [timelineKey, setTimelineKey] = useState<string | undefined>(undefined)
   const [until, setUntil] = useState<number | undefined>(undefined)
   const [loading, setLoading] = useState<boolean>(false)
diff --git a/src/pages/primary/DiscussionsPage/ThreadSort.tsx b/src/pages/primary/DiscussionsPage/ThreadSort.tsx
index db453b1..16611c2 100644
--- a/src/pages/primary/DiscussionsPage/ThreadSort.tsx
+++ b/src/pages/primary/DiscussionsPage/ThreadSort.tsx
@@ -1,9 +1,9 @@
 import { Button } from '@/components/ui/button'
 import { DropdownMenu, DropdownMenuContent, DropdownMenuItem, DropdownMenuTrigger } from '@/components/ui/dropdown-menu'
-import { ChevronDown, Clock, TrendingUp, ArrowUpDown } from 'lucide-react'
+import { ChevronDown, Clock, TrendingUp, ArrowUpDown, Zap } from 'lucide-react'
 import { useTranslation } from 'react-i18next'
 
-export type SortOption = 'newest' | 'oldest' | 'top' | 'controversial'
+export type SortOption = 'newest' | 'oldest' | 'top' | 'controversial' | 'most-zapped'
 
 export default function ThreadSort({ selectedSort, onSortChange }: { selectedSort: SortOption; onSortChange: (sort: SortOption) => void }) {
   const { t } = useTranslation()
@@ -13,6 +13,7 @@ export default function ThreadSort({ selectedSort, onSortChange }: { selectedSor
     { id: 'oldest' as SortOption, label: t('Oldest'), icon: Clock },
     { id: 'top' as SortOption, label: t('Top'), icon: TrendingUp },
     { id: 'controversial' as SortOption, label: t('Controversial'), icon: ArrowUpDown },
+    { id: 'most-zapped' as SortOption, label: t('Most Zapped'), icon: Zap },
   ]
 
   const selectedOption = sortOptions.find(option => option.id === selectedSort) || sortOptions[0]
diff --git a/src/pages/primary/DiscussionsPage/index.tsx b/src/pages/primary/DiscussionsPage/index.tsx
index d9e0ced..e257ef9 100644
--- a/src/pages/primary/DiscussionsPage/index.tsx
+++ b/src/pages/primary/DiscussionsPage/index.tsx
@@ -113,6 +113,18 @@ const DiscussionsPage = forwardRef((_, ref) => {
     return controversy
   }
 
+  // Helper function to get total zap amount for a thread
+  const getThreadZapAmount = (thread: NostrEvent) => {
+    const stats = noteStatsService.getNoteStats(thread.id)
+    if (!stats?.zaps) {
+      return 0
+    }
+    
+    const totalAmount = stats.zaps.reduce((sum, zap) => sum + zap.amount, 0)
+    console.log(`Thread ${thread.id}: ${stats.zaps.length} zaps, total amount: ${totalAmount}`)
+    return totalAmount
+  }
+
   useEffect(() => {
     setCustomVoteStats({}) // Clear custom stats when relay changes
     fetchAllThreads()
@@ -366,6 +378,24 @@ const DiscussionsPage = forwardRef((_, ref) => {
         
         console.log('Sorted by controversial')
         break
+      case 'most-zapped':
+        // Sort by total zap amount, then by newest if tied
+        const sortedMostZapped = [...threadsForTopic].sort((a, b) => {
+          const zapAmountA = getThreadZapAmount(a)
+          const zapAmountB = getThreadZapAmount(b)
+          console.log(`Comparing ${a.id.slice(0,8)} (zaps: ${zapAmountA}) vs ${b.id.slice(0,8)} (zaps: ${zapAmountB})`)
+          if (zapAmountA !== zapAmountB) {
+            return zapAmountB - zapAmountA // Higher zap amounts first
+          }
+          return b.created_at - a.created_at // Newest first if tied
+        })
+        
+        // Replace the original array
+        threadsForTopic.length = 0
+        threadsForTopic.push(...sortedMostZapped)
+        
+        console.log('Sorted by most zapped')
+        break
       default:
         const sortedDefault = [...threadsForTopic].sort((a, b) => b.created_at - a.created_at)
         threadsForTopic.length = 0